F5

v. 1 To refresh yourself, like if you've been daydreaming during a meeting.
v. 2 To wake up.

Origin comes comes from the use of F5 as a "Refresh" key for MS Windows applications.

1.
Frank: Greg, what did you think of Tom's suggestion.
Greg: (Daydreaming) Huh? Wha?
Tom: F5, dude!

2.
I can't really F5 until my second cuppajava.

by Leif April 08, 2005

f5

WWE Superstar Brock Lesnar's finisher.

Brock Lesnar hits Kurt Angle with the F5 and gets the pin to retain his WWE Undisputed Heavyweight Championship!

by SmackAhoe July 24, 2003

f5

a Tornado rated: (violent), with winds from 261-318 mph, causing (RARE) INCREDIBLE DAMAGE: Homes on slabs levelled with debris removed. Schools, motels and other marginally engineered buildings have considerable damage with exterior walls and roofs gone. Top stories demolished.

Holy fuck! That was a HUGE f5 tornado, moved my house 500 yards before crashing it in the middle of the highway... Totally demolished!

by Brian February 28, 2004

f5

The highest rating that can be applied to a Tornado, using the fujita scale.

F5 Tornados have wind speeds in the area of 261-318mph and do incredible amounts of damage.

Sometimes referred to as 'fingers of god'.

An F5 tornado hit Omaha on May 6, 1975......

by mrenigma August 02, 2004

F5

Reminding someone who you are or of something.

Boy 1: Ha your lame.

Boy 2: Yo do I have to F5 yo ass

Boy 1: No I was just kidding

by Darth Fader XII July 24, 2012

f5

that horrible button on my computer

I hit F5 to knock Craig off of inklink.

by Lo!s!er October 15, 2003

F5

(Frog Faction Female Frienship Fuckers)

Two chicks that fuck up there boyfriends friendships.

"Looks like we have another F5 comein along!"

by slbrey December 13, 2004