What is Gmac?
1.
Named after the short but tenacious Syracuse point guard Gerry McNamara, a GMac is any inprobable clutch or momentous action a person pulls off, usually at the last second.
I can't believe Tom pulled that test grade out of his ass -- that was a total GMac.
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Random Words:
1.
When, after a girl orgasms, she becomes very emotional or moody. Grumpy.
I must've given her a grumpygasm, because she was so mood..