Chuffapotamus

A minger with an especially large butt.

Debbie's a right chuffapotamus since she ate all the pies.

Chuffapotamus by randomchancer January 28, 2010

huffapotamus 

Meaning some who huffs and complains a lot.

Josh was complaining so much he started to sound like a huffapotamus

huffapotamus by Brophyy March 15, 2018