1 definition by muckmasterflex

Top Definition
The act of two males having sex with one female who is menstrating, one of the two males is gay or bi therfore the bi male is in the ass "so he can imagine a guy or a girl" and the straight male is in the vagina. from five to ten feet away it appears to be a filthy Tuna sandwich.
last night me and my gay friend had sex with a girl on the rag. my sister walked in and said who's red tuna sandwich is that on your bed.
by muckmasterflex May 03, 2007
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