Sometimes, when I speak, I might have trouble with enunciation. It's not a lisp or anything, but it usually happens when I'm nervous, or going on too long a monologue. I don't think there are any syllables in particular that I have trouble with, but I want it to stop it, mainly because public speaking becomes a big problem otherwise.
This started after I became a big fan of the Terminator. I'm serious! f**k you, Ahnuld!