let off

to nut(ejaculate)

Aye dawg im talkin this girl here was so good i let off in like 10 minutes bruh

let off

to shoot, or empty a clip from your weapon (gun)

AW DAM, they let off shots Son!

let off

Polite way your parents might enquire or announce if you've farted

Oh dear, father, I think Jeremy's let off again, open a window.

Let Off

Terminology for someone implying sexual favors implicitly, yet explicitly without directly stating it.

P1: I need a favor
P2: You know what you can do to speed things up. I'll see what I can do for you. Come by tonight.
P1: you mean let off?

Let off steam

Get rid of one´s anger in a way that does not harm anyone

Running after work really helps me let off steam. I always feel better afterwards.

letting off shots

shooting off bullets

Yo, Jamal was letting off shots fo sheeze!!!

let off in me

To ejaculate inside a woman. Another way of asking someone to cum inside you.

Oh yeah baby, let off in me and watch it drip out..