look up any word, like trill:
 
5.
The act of ejaculating on a womans upper lip then freezing it, then you punch the frozen lip.
Arnold gave marrisa a stiff upper lip after she refused to make him a sandwich.
by meowwwwwwwwwwwwww11001152 April 18, 2011
 
1.
Somewhat antiquated English saying, meaning that one must finish a task despite all odds.
C'mon, lads. Keep a stiff upper lip!
by Daniel February 03, 2005
 
2.
An English term meaning to keep all your feelings bottled in
"You should be more open to people"

"I can't, I keep a stiff upper lip"
by strengthchip January 21, 2009
 
3.
Somewhat archaic English phrase meaning unwavering determination.

Can also be used in a negative sense to describe general obstinacy or stubbornness.
Jimmy just won't give up until he is victorious. He's got a stiff upper lip.

Dude, leave her alone. She obviously isn't interested. That stiff upper lip is gonna get you in trouble.
by Rusty de la Serna November 06, 2008
 
4.
Meaning you must keep your composure in all situations.
Be tough.
Hailey : I miss you daddy -cries-
Dad : "Stiff upper lip." baby, we'll get through this.
by Nannerpus February 15, 2009