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A gay sex act that involves at least three males in a bent over position in a circle (ass in) surronding a fourth male who proceeds to rapidly ass fuck each bent over male and switching partners periodically. This goes on until he comes and then positions are switched.
Justin was doing the spinervals so long last night he almost puked!
by ErrorF002 March 01, 2008
14 8

Words related to spinervals:

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