Top Definition
An expression widely used within the military to describe a person who, by their input or presence, have the ability to suck all the fun out of a particular task or situation.
"I used to enjoy being on nights, but recently it's been such a drag because I've been on with Danny, he's a total morale sponge."
by dlc671 April 03, 2009
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.