Top definition
acronym - public display of intercourse. usually occurs at school, during a movie, when the teacher has the lights turned off and the students are allowed to lie about on the floor.
"Dude, I've been scarred for life. I saw Tony and Aimee doing PDI during that U.S. history movie."
by azer29 October 12, 2006
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Apr 25 Word of the Day
v. collectively or individually finding someone/something to blame for a problem, as opposed to brainstorming which connotes finding solutions to a problem

n. the act of finding someone/something to blame for a problem

(from a TV ad for HD television)
The committee commenced blamestorming over the situation rather than seeking solutions to the problem.
by TBea April 22, 2008
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2
Panty dropping index. On a scae of one to do-me-now the likelihood and speed of an object or situation to cause a woman to remove her under-panties.
Ted just got done fighting a fire, that is a "do-me-now" on the PDI scale. *SPLOOSH!* panties off!
by penispaste March 01, 2014
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3
It means that you have a PhD in being really & officially gay ...
Just like Adam Sandler got a P.D.I.after that movie ( I Now Pronounce You Chuck and Larry )
by Mr.Small May 22, 2009
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4
Dudes who blow you off for days are PDIs for not knowing what they have.
by KingJerry324 July 14, 2018
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