That's awful. Maybe you could sit them all down and tell them how you're really struggling with it and they're really not helping you overcome it? Also look into speech therapy. It works wonders and is worth the money. Best of luck OP.

You must be the star of the family. Your siblings must put you down just so that they can feel like they are better in some way when in reality you will always be the better man

That thuckth! Thorry your family is thuch a bunch of athholes!

So sorry your family is being mean I hope you can work things out with them

What assholes. You should put pickles and tuna fish under their beds to get back at them. That's what I did to my sisters when they made fun of me...

sounds like you need a new family ?

Your family sucks. Time to make voodoo dolls of them out of spoons and put the voodoo dolls in the pickle jar because they were mean to you. ;)

And in a little while, they're going to ask why you're always so quiet. :-/

You may want to talk to them using sign language

I used to have a really bad lisp when I was younger and I was in speech therapy for years. What really helped was going to a speech pathologist. I still have my lisp but it isn't as severe as it was and people don't notice it as often (unless I'm upset and start speaking fast). Good luck OP I'm sorry your family does that to you :(