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1.
1. What males say when they are excited
2. The act of roaring in a mosh pit.
1. The chant of an ancient civilization.
"JOOOOOOOOOBMA!"
"joomba joomba joomba!"

"Oh yeah, that dudes going to joomba!"
"joomba his ass steve!"
by Cizor March 23, 2009
 
2.
Something really pleasing to the eyes. Usually refers to a girl when they are really hot. Sort of like "Helooo Nurse".
Dude, did you see that girl over there? Joomba!
by Dan Schnur January 29, 2004