To flank someone (generally in war games) to get behind them, kill them, then proceed to rape them. Usually in some sort of "crouch-stand" maneuver. (Tea bagging)
Soldier 1: Dude, we got to anal flank these guys, we're getting owned!

Soldier 2: Alright, I'll distract them, you do it.
by Hiru March 15, 2008
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Painfully sore and swollen pussy lips from extended periods of sexual activity.
Carla and her boyfriend pulled an all night sex marathon and she ended up with the worst case of Tender Flanks she had ever had. Could barely walk.
by Eaton Holgoode April 20, 2015
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1. When multiple people flee from an embarrassing or shameful situation

2. A gangbang
1. After my mom saw me and my friends watching porn, we all ran a flank tank.

2. Me and a few guys ran a flank tank on that slut last night!
by ThatStupidDude June 25, 2018
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The act of making love to a woman on a roof
No way man.... Jambo is doing a Spanish flank up there
by Troybhoy December 9, 2018
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"that shit was clark flanks bro"

"yeah it was legit dude, hold on lemme put back on my pringle cap"
by TheDarkBadger September 12, 2009
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Noun (naval terminology): the highest speed commandable of a warship under normal (peacetime) conditions, succeeding the terms "normal", "regular" or "standard" speed, and (under wartime conditions) preceded sequentially in velocity by the terms "attack speed", and finally "ramming speed".
"Upon lookout sight of the enemy ships, the consul Quintus Arrius ordered his ships to come to flank speed."
by speedog May 2, 2010
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