A girl that you have on speed dial to suck your dick but don't fuck her at all. She just around when you want some head.

A suck duck is ducking and sucking.

1. When you try to type suck a bag of dicks but your auto correct is offended by this and changes dicks to ducks
2. When you want to say suck of bag of dicks but there are children (or your parents) in the room

3. When you want nothing to do with dicks but still want to get your point across

When you give a blow job for a favor of your choosing and you ignore them until You need another favor.

A person who takes the shit outside, and then steps in it

Someone that is so stupid that theybtake a shit outside, and then step in it.

When someone uses you for sexual purposes, then becomes distant or starts ghosting you.