Hmm yes. Actually, Skully has a thing with teasing everyone he has some kind of on going relationship with in general (i.e. tickling Red and showing up to his bakery in his shittiest clothes, probably something along the lines of ruffling Tang’s hair or sucking on his neck or something, he used to steal Nasir’s hats and jewelry). Really, Skully is a huge child. So yep, this is now a thing.
Another one is that Skully purposefully has a fascination with gLow's ears after he finds out their THE sensitive spot for gLow, and will constantly just sneak up on them or move gLow's hair out of the way, kisses them, etc just to tease gLow, in public in private, wherever. and gLow gets really embarrassed and always scolds him (at least if he does it in public) but he doesn't get very mad because he also finds it exciting... still embarassing though.