1.) to have sex with a complete stranger

2.) to have sex way too soon with a new boyfriend or girlfriend that you "just met"
girl 1: OMG last night I was walking home and approched this hot guy on the corner and started having stranger sex with him it was good

girl 2: oh thats really hot

guy1: I met a girl at the bar 3 nights ago and asked her to be my girlfriend and she said yes and 1 week later we had steanger sex!!!

guy2: oh stranger sex sucks because you dont know the other person too well what if you caught have HERPES!!???
by mmfans456 June 2, 2009
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When having sex with people you know just isn't good enough.
You, sir. Yes, you. You're hot; let's fuck.
A day later...
Wow, that was the best Random-Stranger-Sex I've ever had.
by Blueballs69 July 26, 2011
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