For a moment I actually thought her butthole had teeth…

bookmite said:
For a moment I actually thought her butthole had teeth…

I honestly cant unsee it now every time I squint...

A new tag for this is urgently needed! that bulging hole is amazing! O ^O
maybe "anal_push", "pelvic_muscles_push", "rectal_peristalsis" or something.

it's too good to let it go unnoticed.

(I've only seen it in videos of porn stars, like hotkinkyjoe, when she would noisily “slam” her ass with this motion. Although the sounds were obscene to say the least, the idea of “inhaling”[pulling] air in and then “exhaling”[releasing] it out is very hot).

lex_i said:
A new tag for this is urgently needed! that bulging hole is amazing! O ^O
maybe "anal_push", "pelvic_muscles_push", "rectal_peristalsis" or something.

it's too good to let it go unnoticed.

(I've only seen it in videos of porn stars, like hotkinkyjoe, when she would noisily “slam” her ass with this motion. Although the sounds were obscene to say the least, the idea of “inhaling”[pulling] air in and then “exhaling”[releasing] it out is very hot).

yes its so hot!

lex_i said:
A new tag for this is urgently needed! that bulging hole is amazing! O ^O
maybe "anal_push", "pelvic_muscles_push", "rectal_peristalsis" or something.

it's too good to let it go unnoticed.

(I've only seen it in videos of porn stars, like hotkinkyjoe, when she would noisily “slam” her ass with this motion. Although the sounds were obscene to say the least, the idea of “inhaling”[pulling] air in and then “exhaling”[releasing] it out is very hot).

I'm pretty sure it's called 'winking'

phenomania said:
I'm pretty sure it's called 'winking'

Not exactly. A wink is a contraction of the muscles that make the anus close.
Here, the anus muscles are relaxed, but the rectal muscles (or pelvic muscles) are tense, which are working to push it out