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1 definition by GrandpaWillie

Half Nelson= A normal bowel movement with limited impact to associated porcelain and surrounding stalls.

Full Nelson= A bowel movement in the like of the Mt St. Helens eruption. Usually impacts the entire restroom facility, including stall walls, porcelain, seat and sometimes the floor.

Affectionately named after a construction worker named Nelson.
Brian: Don't go into stall #2, I just had a Full Nelson. Those protein shakes are killing me.

John: Really I only had a Half Nelson this morning...
by GrandpaWillie February 17, 2010
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