Top definition
1. Acronym for "Oh hell, my shit stinks!"

2. A gastro intestinal episode of biblical proportions

3. James Bond film "On Her Majesty's Secret Service"
1: "Where'd John go?"
2: "OHMSS."
1: "Oooh.. Guess he should've passed on the burrito..."
by Phuyuck '74 January 21, 2004
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