Definitions by penispaste

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!

PDI by penispaste March 11, 2014