Based off Disney's character, Pumbaa is used to describe the "big" one in a group of girls who typically cockblocks guys from the prettier girls in the group. Pumbaas exist because they do not get any love and thus prevent
every other girl in their group from getting love as well.
Man did you see the
pumbaa swoop in and grab her girl away from me?
Man that pumbaa was real nasty, I think she even had
tusks on her.