Top Definition
the boy of yesterday; ex-boyfriend
Friend: So girl, how did your date go?
Girl: Ha, good but not, I got high and think I may have hurt him...
Friend: Ahh...so he is now yesterboy!!
Girl: Time to go make a yestergirl!!!!
#ex-boyfriend #bf #booty call #past #date
by bodyheat May 02, 2011
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