The act of having someone grapple your erect penis, and twist it around in a 360 degree motion. Similar in the way you wring a chicken's neck

Also see "Chicken Roll with Mayonnaise" - This is where the Chicken Roll occurs just as the man is about to ejaculate. The penis gets let go, and spins around, spilling cum everywhere.

A pubic hair piece. A toupee for the pubic area/genitals. In the 1700’s when mercury was used to treat sexually transmitted diseases (Gonorrhea or Syphilis) one of the side effects was the loss of pubic hair. To disguise this condition, that was not cured by mercury, a Merkin was employed.

A chicken that has come out of its egg and done a Barrel Roll not a Aileron Roll or bad Cartwheel

Verb, "to chicken roll". This phrase is used to indicate when you are completely and totally sick of something to the point that you never want to hear, see, discuss or even think about what you have "chicken rolled".