go buy a new toothbrush with replaceable heads. brush your teeth until the original one is used beyond reason. then put a new one on it. then MAYBE your moth will be sanitary. god it's like you've been going down on your sister twice a day. ewww. incest via toothbrush.

If you had a normal regular toothbrush you wouldn't have this problem. Switch tooth brushes and buy the girl a vibrator. Problem solved. Or - what the guy above me said. Brilliant!

go into her room sometime when shes not home after you get done running or working out ect. and rub your ass sweat all over her pillow. ive done that. oh, and get a new toothbrush.

lmao that is sooo funny

poor thing

Step 1:Keep the toothbrush. Step 2: Hide your new untainted toothbrush. Step 3: Apply chili powder, jalapeno juice or some other safe irritant to your old TAINTED toothbrush. Step 4: Sit back and patiently wait, then enjoy, then gloat. Payback's a BITCH, especially when you use my toothbrush to get OFF.

That......is.........disgusting!!!!!! i will never use my Oral-B again!!!!

EWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW YOUR SISTERS ONE SICK I DON'T KNOW WHAT I think i'd have to get gloves and put hers in the toliet someone pees in it . just imagine how many times sees done that with it and you've used it.... feel bad for you.

oh GOD! thats sick put a little surprise in her toothpaste...u know-sticky ;) then you can call it even (after she uses the toothpaste to brush her teeth) ^i know its nasty but what she did *EW*

you should skeet on her toothbrush

WOW!........

uhm , i wouldn`t be mean to your sister about it , because everyone has sexual FEELINGS . juss tell her to get a vibrator . lol