ok, let's talk about this one utterly Tugger mannerism: the mane-pop.
The Munkustance is a Munkustrap mannerism, and it's scripted and deliberate and passed on in staging tradition. The Tugger mane-pop is not, or not exactly: it originates not in 'ok, your character stands like this at these moments' but in a practical necessity of the costume.
Alex Snova, Vienna revival, March 2022.
Look at this great big heavy thing (which nevertheless moves so lightly and freely, thank you yak hair)! But when he spins around like that to talk to Jemima, it rides up and back a bit. When he hears Bomba's voice and turns around, he pops the mane to get it back into position and tugs at the bottom centre of the vest it's attached to, re-settling it into position.
But it's not just a practical 'oh, gotta fix a costume malfunction' (like an actor discreetly re-adjusting a legwarmer that's falling down). For Tugger it's a mannerism, it's part of his swagger—or he can use it for aggression if it's combined with a hiss. Here, it's "oh, you wanna go? ok, challenge accepted, let me get my sexy saunter on!"
It comes out of the practicalities of an awkward but highly iconic costume piece and evolves into a very Tugger-specific set of gestures and expressions which can be used to characterise him in a lot of different moments and moods, and I think that's wonderful. 😌