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A sensation experienced by larger women, similar to an orgasm. Due to the size of the specimen the nervous system is severely impaired and so the sensation can take up 33 1/4 days for the electrical impulses to reach the synapses involved with pleasure.

The sensation is common in most women above 15 stones, but especially effect midgets.
1. I can't belive anyone would put up with Sally's smell long enough to give her a HippoGasm.

2. June the office is not an appropriate place to have a HippoGasm, you're fired.
by mortensent April 11, 2005
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