Another way of saying, "All Day Sex (after the kids go to
school till 3:00 when they get out)". It's treated like a Mexican holiday, with the Tequila shots, etc. between bouts. Also, sometimes means an extra long time having a
hard-on without ejaculation, or an all day
hard-on.
Hey, you wanna have Fat
Tuesday with me tomorrow? (doesn't matter what
day of the week it is). Or: Damn, I was Fat
Tuesday after I saw you in that outfit this morning.