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1.
A blopsy is what you call a girls pussy when you find out the hard way that she is on her rag. Blo- bloody psy- pussy
"How was the sex last night?"
"Good until we stopped due to her blopsy."
by Joe Monaro October 04, 2005
 
2.
Derived from the words blood and pussy. The act of learning that a girl that you are intimate with is on her period.
"Joey we can't have sex tonight, im on my period."
"Marissa, that's ok I like the ocasional blopsy."
by Frank Moroder November 27, 2005