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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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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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A sex move move where the male ejaculates on the lamp shade of his sexual partner, with or without their knowledge. Henceforth, every time they turn on the lamp, the 'bat signal' will be projected on to a wall or ceiling.
I did The Bat Signal at this girls house last night. Because I'm the hero she deserves, but not the one she needs right now. So she can hunt me whenever she turns on a lamp. Because I can take it. Because I'm not a hero. I'm a silent guardian, a watchful protector. The dark knight.
by M T Hammer June 14, 2018
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