Mumangoes can be used to describe mammoth mammaries
. It kinda attempts to fuse magnanimous, used in its meaning of generosity, and mangoes
, a well-known term for boobs
. So a generous helping of mangoes, ie a pair of massive mammaries, can simply be called Mumangoes.
A: Dude did you see the Two and a half men epi last night?
B: Yeah man... That new chick got introduced, Chelsea!
A: Fuck yeah man did you see those mumangoes
? They're fucking ridick