Whomps is a word that is used to describe basically anything...its meaning is determined by the person using it. This definition is presented in the Recess episode entitled, "The Story of Whomps". (For you doubters, this must be true because they even brought in a professional slangologist)As a general rule, it is used to describe something or a situation that is undesirable.
Invented by theatre kids at Irvington High School. It is supposed to represent a sound effect of a Man's penis going up. It normally used when one would normally say "That's what she said" but more like a guy saying "I just got an erection". Normally used after someone says something sexual or one sees a hot girl (Or guy) or something that makes their penis go up.
*A hot girl with cleavage showing walks buy*
Person A: "Whomp"