The Bat Signal 

The Bat Signal is a hand gesture consisting of the pointer finger on one hand and a hole made with the opposite hand while moving the index in and out simulating a sex act.

A girl asks a friend of hers how she should let a guy know she wants to take him home. Her said says "give him the bat signal".

Two male friends are at a bar, one friend asks the other "how can I find out if she'll put out without directly asking her"? His friend replies "give her the bat signal, you'll have your answer after that".

The Bat Signal by That ain't no sock in my crotc December 16, 2020

The Bat Signal 

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.

The Bat Signal by M T Hammer June 14, 2018

the Bat Signal 

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

the Bat Signal by caelous May 18, 2008

The bat signal 

The act of posting on ones social media’s to alert the other sex of your presence in the area

I’m sending out the bat signal tonight Jessica is looking A-1

The bat signal by Dixy14 December 22, 2019

The bat signal 

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.

The bat signal by ferkyferk21 November 23, 2011