More snaky headcannons for my snaky boi:

Deceit sheds like a snake, at least his snake parts which ends up with him hiding in his room and hiding in his fort of blankets till he's done.

He's cold blooded so he's cold all the time, causing his room to be always really hot and having to wear baggy clothes to keep himself warm. He also really loved cuddles for this reason.

He has a fork tongue, it's bigger than a normal snake's tongue but it's still a fork tongue which he does enjoy using to tease his partner.

He bleps... Like he really bleps and he doesn't usually do it on command and it just happens when he's working or concentrating. He also loves boops on his snoot, kinda freaks him out but his partner does it anyways.