Top Definition
when you can see the outline or characteristics of a penis through sweatpants, spandex, short shorts or other pants of the like; head and shaft must be distinct for a full smumf to be in effect.
"Did you see that kids smumf in math class? It was raging."
by smumf detective October 14, 2007
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.