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while fucking a girl reverse cowgirl style, have her stretch out her arms, while taking a flashlight and shining it on her back and start singin the batman theme song... The result will be a 'bat signal' on the wall
'batman dodah doo batman' flashlight produces the bat signal
by caelous May 17, 2008
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A sex move move where the male ejaculates on the lamp shade of his sexual partner, with or without their knowledge. Every time they turn on the lamp, the remaining bat signal will be projected on to a wall or ceiling.
Mate 1: How did you go last night mate??

Mate 2: Great guns, I gave her the bat signal.
by M T Hammer September 17, 2016
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After successfully fucking hottie, flicker light switch 5 times letting Gotham city know you're the man.
After I fucked her I made sure everyone knew, so I gave them the bat signal.
by ferkyferk21 November 23, 2011
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