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1.
When an anus lets loose such a shit, that it stretches the hole past is physical limit, causing it to then gape.
" Wow, what took you so long in the bathroom?? you must have a gaping anus by now!!?
by Krahnic September 17, 2010
 
2.
A old and ancient untold Greek Mythological God.
Susu was wearing a white cloth and his ass was hanging out. He looked just like Gapinganus!
by Susu Support March 07, 2008