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1.
The attempt to seduce a woman while she is on her period.
"Danielle's on the rag but i'm really horny. I'm gonna try to Flomance her with some chocolates."
by Royal Cunninglinguist Society January 29, 2009
 
2.
Engaging in the act of sexual intercourse whilst the woman involved is on her period.
"She was on her period but we got down to it anyway. It was a total flomance."
by Jim Lovetoy October 14, 2009