That's a Sinch!

When you are s*x texting with a girl and trying to bring in your friend somehow. You will say:" I bring a Sinch". When she's replying "what's that?" you are going to send a nude pic of your best homeboy.

Him: Baby, I'll bring a Sinch!

Her:"What's that?"
Him, sending nude pic of his best homie saying: That's a Sinch!