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2.
Masturbating just before sex to make sure you last as long as possible.
I was almost jizzin in my pants when she was grindin on me in club, so I had to have a quick tactical wank in the toilet before I nailed her.
by I P4P4MURF I February 13, 2011
 
1.
Masturbation a period of time prior to intercourse to allow the participant to last longer before ejaculation. Also known as "Strategic wank"
"Err, Not tonight love"
by Ian S July 18, 2005
 
3.
Having a wank before heading out on the town to avoid turning up in 'rape mode'.
Ed: How come Dave's behaving himself tonight? He hasn't tried to finger any of those birds yet and he's been stood near them for nearly a minute?

Steve: He had a tactical wank mate.

Ed: Good call, he might see out the night.
by wankhouse December 31, 2013
 
4.
The masturbation used right before having sex. Used to ensure that a cock-slap does not occur. As made famous by The Inbetweeners.
Simon: What if I can't get it up?
Jay: Nah, don't worry, nip off and have a tactical wank now
by kiillrz December 15, 2011
 
5.
A tactical wank is one where you manage to slip away in an awkward or boring situation to masturbate in a quick time frame and manage to get back without anyone noticing that you had gone away. Further more people must not have knowledge of what has just taken place. A more informal slang term for this is "tac wank"
Example 1.

*R slips back hoping no one has notices his absence*

"Dude, we know that look, you have just been for a tactical wank haven't you."

Example 2.

"Where have you been son, we were having an important dinner discussion about poor university grades?"

*cough* No where, I just needed a minute."
by LuckyMitch May 19, 2012