Wave 1 Generations FOC toys in packaging

[5FDP]

Similarily, "That dude has massive guns" - Do you think that guy has muscly arms or actual, big guns?

Only if your name is Bruce Campbell

[kup]

Generally speaking, "She's got chicken legs" = metaphorical to mean "her legs are skinny".

Don't think I've ever met anyone that's interpreted it in a literal sense.

Similarily, "That dude has massive guns" - Do you think that guy has muscly arms or actual, big guns?

That's just the way I see it and what I refer to when I say Chicken legs. Now that I know what you mean when you guys say it, I can understand what you refer to.

[Ode to a Grasshopper]

I think a decent rule of thumb is: for people it means skinny, for TFs it means birdlike leg joints (especially re. the knees).
AFAIK TF things like this usually get named after individual toys/characters, i.e. (Bulkhead Syndrome), other franchises (Pokeformers), and/or obvious descriptions (shellformer, Gold Plastic Syndrome), with the latter two often ending in -former.

Either way, I want that Starscream, and maybe Shockwave too.