When your ass is so big, that it can't get any bigger
Did you see the junk in her trunk? It has definitely reached capassity.
by bopgirl February 12, 2010
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a retard, someone who experience great retardedness to the dome peice
someone who cannot wipe his butt clean and needs help. Someone who crosses his arms when he walks.

You are a big capass
by breadbandit September 7, 2006
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The posterior-related size-rating (i.e., the maximum width, weight, volume, etc. that can be safely supported/accommodated) of a sitting-device of some kind, such as a lawn/office chair, bus/airplane seat, etc.
I saw an ad-message on FreeCycle from a lady who was looking for a wheelchair for her super-corpulent husband, so I contacted her about a couple of standard wheelchairs that I had; she regretfully replied, however, that she needed a chair with considerably greater capassity than the ones I had.
by QuacksO May 27, 2019
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