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1.
PDI
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

Words related to PDI

pda pdsi sex sexual intercourse teen sex
 
2.
PDI
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
 
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