What is thick cock?

An alias for Mike Robertson Jr given to him by several women at the University of Arizona.

Damn girl why the wheelchair? Did Wild Bill Thick Cock stop by after his game last night?

thick cock - video

Thick cock represents the male reproductive system known as the "penis" or "peni" for a plural.
Thick is shown when the penis is enlargened

gay 1:man, your dad's cock was thicc dude
gay 2:you mean he had a thick cock?