1. To laugh appeasingly at someone's jokes.

2. To pacify a situation with falseness or fakeness.
Will was forced to gernate everytime he talked to his relatives.

His laugh sounded forced and insincere; it was clear that he was gernating.
by dvn June 5, 2006
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Dancing in someone's living room masturbating while using chewing tobacco as lube.
Carrie left to go to the pharmacy and when she came back she caught Rob doing the Gernat Shuffle.
by Carandil April 17, 2010
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