Where the top third of an arse is visible and the lower two thirds are hidden underneath the clothes.
woman: does my bum look big in this?
dude: put it this way - there's enough arseberg to sink the titanic.
dude: put it this way - there's enough arseberg to sink the titanic.
by ChrisUK August 21, 2008
Someone whom on the surface is clearly an arse however its not until you dig much deeper you realise just how big an arse they really are (based on the concept of only 1/8 of an iceberg being above water)
After another three hour long meeting between S & R, S discovered how much of an arseberg R really was.
by Some chicken April 11, 2011