Spontanious Ejaculation Syndrome; when you cum uncontrollably for no apparent reason(n)
2. to cum in your pants for no apparent reason at a random given time(v)
"Omg Kyle, that's the third time this month, I'm sorry to say it but, I think you have S.E.S."
"Holy crap, Kyle, you just sessed yourself again? Get off my couch!"
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