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!
by parkerpeter January 15, 2011

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×