Crowley: *homeless, going through an existential crisis, questioning everything, needing 6 espresso shots to function, just wants to hang out with his husband bestfriend*
Nina (to Aziraphale): So how's your naked man friend? *eyebrow wiggle*
In season 1, when trying to convince Aziraphale of things, especially during the "godfathers" idea pitch, Crowley would start to snake-ily sway. Think about Kaa in The Jungle Book, the "Trust in Me" hypnotic sway.
He's doing it here. Doing EVERYTHING people do to avoid crying; looking away, looking up, breathing hard...and probably unconsciously, the snake sway.😭