I'm going to make fun of my fwb for not making me come
Do you really think you should make fun of them like that?
Yeah, I'm annoyed.
You can be annoyed you had a disappointed time. But they don't owe you anything, do it yourself.
I don't have time to do it myself.
Well you really shouldn't take out your frustrations on your partner. Insulting someone's sexual performance is very hurtful, and they're unlikely to have sex with you again if you do so.