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1 definition by MadToast

 
1.
When a female, laughs/coughs/sneezes, while she is on her period and a little bit of period blood comes out her vagina.
"Stop making me laugh, i just custarded"

girl 1 - "I'm so sick" *cough*cough*
girl 2 - "Are you on your period?"
girl 1 - "Yeah, how can you tell?"
girl 2 - "I can see your custard"

girl 1 - "HAHAHAH .. .. ha, ha...ah."
girl 2 - "whats wrong?"
girl 1 - "fucking custard."
by MadToast May 04, 2008