Top Definition
During a large orgy, one member, upon reaching almost orgasmic point will yell "Group effort orgasm", to signal he is not in need of anything, and that everyone should finish themselves until another person cries this. When all participants have exclaimed they are near orgasm, everyone jacks/jills off eachother in a circle so they all cum within a minute of eachother. Very entertaining to watch, very difficult to master.
There were seven of them having a group effort orgasm wednesday.
by Kung-Fu Jesus April 18, 2004
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