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The male internal orgasm, generated by stimulation of the prostate, the male g spot, via rythymic insertion of something into the anus, sometimes with the more conventional orgasm thrown in for good measure.

Obviously well known to most of the gay male community but available to all!
'YEAH!!' cried Brad as again he felt the tell-tale tremors of an arse orgasm forming in his gut!
by ..WiL May 18, 2005
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