the gentleman's tip

The sex act where a man, upon receiving a woman's permission, inserts the index finger (no further than the middle knuckle) into the woman's anus during vaginal intercourse, and gently slides this portion of the index finger back and forth.

We find ourselves in the midst of a conversation between Jane and her friend Sarah that has stumbled upon the topic of anal sex, let's observe.
Jane: James has been asking for it forever, I don't know Sarah, like, I think he could be the one. What should I do?
Sarah: just have him start slow, with "the gentleman's tip" and work your way up from there

gentlemans tip

when someone fucks in their friends bed and leaves the used condom in their pillowcase.

After I piped that thot I left a little gentlemans tip in his room.