A Twonk is most aptly described as a fatass twink.
Damn that big boy giving off that twonk energy
A Twink is a former Twink who has embraced their inner masculine qualities and has became a Bear, this process typically happens through being Red Pilled
"Hey do you know Michael?”
"Yeah isn’t he that little Twink?”
“He was but now he is a Twonk"
Twonking is when a girl or boy is tweaking while fronking
Hey girl you wanna go twonking with me