Mark just wants to put his mouth on you

Day 3 - Oral. Distractable golden retriever Mark puts everything in his mouth, then he discovers putting you in his mouth helps him concentrate on you. What happens next?

Tw: Uh None?
Kinks: Oral (duh), Praise, Knotting and Claiming, Sensory Overload and Edging, Vocal Ramble

Mark wasn't hard to put together. Who are you? Mark's person. Other than that it's all up to you.

This man's gen was generously donated by SteamCheshie