The stuff that collects as the result of dead skin and sweat under a fat chick's boobs or within their bodily creases. Sometimes it happens to men as well.
"Your grandma smells like titmuck"
"All you need to do is shower every day so you don't smell like titmuck"
"Pass the titmuck!"
"All you need to do is shower every day so you don't smell like titmuck"
"Pass the titmuck!"
by french fries and gravy April 27, 2006
Get the titmuckmug.