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Acronym for "Slam my dick in a door"
When you see/read/hear/think something thats sickens you so badly that you would rather slam your dick in a door than see/read/hear/think whatever it was.
1 : Imagine your parents doing it.

2 : No thanks, I'd rather SMDIAD!
SMDIAD by parkerpeter January 16, 2011
Related Words
A phrase used by overweight illiterate 40 year olds living at home in their moms basement, when losing an argument to a 7th grader.
raYZHu: AHAH U SUK DIK AHHHA U MOMMA FOCK GAYS AHAHAH
veRAGOoD: learn english you testiless chink
raYZHu: SMDIACK
smdiack by doogarev July 11, 2004