Any time a man (or woman for that fact) is a little over-excited, it's a stiffie time.
Stiffie Time can also mean: Hard, or constantly horny.
2.) It's 'Stiffie Time' I think we should mate in that closet over there.
3.) "Don't hit that dude over there during 'Stiffie Time' he'll fuck you up!"
4.) What time is it? STIFFIE TIME!!!
"Dude that bitch just took $250! No stiffie time tonight.
Why is it always stiffie time before I wake up?
I'm so bored right now, think I'll watch some jenna jameson movies and have a stiffie time.