look up any word, like the eiffel tower:
 
2.
Used as a more exciting word than,"I agree," or "I second that." Shout it out, and people will look and understand exactly what you are saying.
Do we all agree on this?

Yes.

Yes.

Yes.

Jumm!

Let's go to Dragon Land!
by garryhyuga September 12, 2010
 
1.
Breasts
Gosh that girl has a lovely pair of Jumms!
by Dale Dempsey September 19, 2003