Top Definition
A disease that affects those with girlfrinds, however is only affects 1 in 6. Symptoms include phantom stomach pain sulking in the corner and using a whiny moapy voice when talking to the mentioned girlfriend.
Dan can't come camping this weekend because he has the mussons.

Why is he acting so weird, oh he has the mussins.
by corben dallas 44 May 01, 2009
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