look up any word, like dirty sanchez:
 
1.
omfg so gross! means like if your feet stink of poop then it would be gross.

Or if your dad has let one rip it wud be omfg so gross!

Or if your winky starts to smell of fish again that would be gross!!
Omg your winky smells! omfg so gross!
by Dumber February 07, 2007