1 definition by MilitantAtheist

Top Definition
A crude expression for a female on her period used by immature boys who don't realise that a female is stressed when she is not on her period (hence the term PMS - PRE menstrual tension) thanks for reading.
"Naff off Dave."
"Oooh! Let me guess - you're on the blob!" Uh, no!
by MilitantAtheist December 04, 2003
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