WTF IS UP WITH PEOPLE AND THESE 3 WAY INCESTS!?!? its jsut not right..... well mayb if both of you are blonde twins i can see where it would b hott for him.... but still.... just dont touch ur sissys pussy

Looks like a case for the new OFF! Incest Repellant.

how do the **** does this shit happen

that's my name, oh $hit.

yikes..... enuff said

dude doin it with ur sis is just ewwww

agreed

423 is a win :)))

no it wadnt the ops sister it was the ops bfs sister

yum

Lawl Win

Green Man Is A Perv!

*Gasp!* it's lyk a soap lol jk :p

oh ew...

first

Maybe he meant Brittney sperms I mean Spears

LEAVE BRITTNEY ALONE *cries*

haha how did u come up wit dat 423

Yes because Brittany isn't a common name at all. Your boyfriend's sister is the only Brittany in existance.

I bet he's from Alabama

Just proves the fact that your sister makes better sandwiches than you, so get back to work you *****!!!

Who has sex with their sister, she must be a *****. Hopefully you kicked him in the balls and dumped his a$$.

I'm Brittany lol

499 lmao 527 u play lax???

omg what's up with these stupid *****

WINcest!!!

he meant Britney spears!

153rd trooper lmfao for that last comment!!!

Brittany Spears?? :/ im sayin anything to make it seem like incest was not the case ewwwww!! D:

incest da best put yo sista ta da test bitch

hahahaha xD

You'r effing retarted, I guess your parents had you out of incest, that's why you talk like that. Poor boy.

469 why does op say "that's his sister" then

misread what you said sorry

:OMG!.….….Thats So Effin Messed Up.!:pp

wow dumbass

best Facebook group ever

is it at least a half sister?

Am I the only one that thinks that Brittany is a common name and could have been cheating on her with someone else .

wow he had sex with his own sister that is so disgusting!

his sister not hers

498-- it's spelled "Britney" if you're gonna make fun of someone, spell their name right..

498-- it's spelled "Britney". if you're going to make fun of someone at least spell it right!

Caroline is pretty close. I see where he may have messed up

Poor girl. He might not have been thinking about his sister. Could have been another Brittany. Or he could be a sick bastard that's into incest.

Either way. Sucks for OP

Maybe he dosnt know any one else named brittany

Sissy ******* , lmfao!!

Sure, she said it was his sister, but couldn't that also mean step sister? It's still a little bit creepy but at least it's not incest.

Haha agreed

Yea incest is really looked down upon in 49 states (sorry Alabama)

Really though! Y would u do your family???? WTF????

Good job like lol

If you can't keep it in your pants, keep it in the family.

Time to have a three some

@greenman that is nasty

yaaaaaaaaaaaaayyyyyyyyy incest!!!!

*** you that's grossss

by the look of greenman's pic, he would know

creepo

lol

keep it in the family, thats what i say

greenman scares me

Incest is the best, put your sister to the test! Noooo just kidding! But that is nasty!

I agree and wow you're beautiful

greenman, i'm sorry but you look really creepy and incredibly pervy

ur hot

oh.. don't know what to say FYL

hey I'm you!!!

That's a pretty common name- not necessarily talking about his sis.

# 467, you're HOT!

agreed /:

lol!

wincest

umm eww not even close

and that's how he's was made...

second

greenman is a creepy perv his probably molested a few nieces or nephews or raped someone eeeww

ur ******* wierd

incest is best... says the creepy Mexican guy

maybe his brother #638

that's hilarious nice 1!!!

holy shit your hot.

you look like you know all about incest!!

****** creep.

People don't bash the guy! he looks shit faced. chill.

melly14398 I just have to say your absolutely gorgeous

Ya maybe for you. ****** wierdo. Btw you look like a sexual predator

No need for the question mark Just ew

Please don't say lol. -.-

Interesting...

Incesting...

What kind of weird ass wincest is your boyfriend into

Damn keep it n the family

Kinda reminds me of that family guy episode where Meg and Chris hook up;)

Hot! Wincest! :P

yikes

1087, I was thinking Joe Dirt. "I'm your sister! I'm your sister!"

#1100 " THINGS GONNA HAPPEN TO ME, I'M JOE DIRT!"

I **** understand how you can mess up your girl friends name with your sisters

Its incest

Ahhh #1137, so innocent, so innocent.

This is ****** up on a Lannister level.

incest=wincest

WINcest!

Lmao

he prob denied he didnt call u that name

Incest is the best sex

1003 - You must have very weird standards.

1003 doesn't always have incest sex, but when he does, he brags about it online.

"Incest is best, put your sister to the test!"

i think the real question is what did OP say after that..

Dude that was Hilarious

Wtf..

#1009- agreed

I liked Ur comment but incest = NOPE

kek

Yeah Britney

1125 - *Brittany

that sounds very reasonable

Ya I could see that happening.

Could the gf have heard her as well

Can I get ur number

Umm #22, you generally don't have conversations with siblings whilst having sex with your girlfriend...

or maby he was cheating on the op with a girl named brittany

Well in this case then thats better

That reminds me of another FML

#1020 a lot of things would be better in this case......

It could be Brittney Spears. For all we know, this could of happened while she was still hot.