promise panty 

The lingerie or panty given to your proposed future lover when you're not yet ready for sex.

She's not sexing me yet but I have her promise panty in my room.

promise panty by ArtieWolfe May 8, 2016

promise panty 

A pair of lingerie (often a panty) to let a person know that sex is in the future. Wearing the lingerie (panty) is real time confirmation that it's time for sex.

She's not ready to gave sex with me, but she's given me her red promise panty.

promise panty by ArtieWolfe May 7, 2016