Everyone knows it as penis or dick or cock or türa.
Girl: Hey can I see ur big munn.
Boy: Hell yeah you can see my big munn!
if ur name starts with d, k or r you can call yourself a munn.
1 guy: what's ur name?
2 guy: romet
3 guy: oh nice munn
Another way of saying "shut up" without people knowing what you are saying.
Teacher: hey, pay attention!
Me : munn!! Throws elbow to face .