Cum Rings 

When you ejaculate and a stream of cum flows down all four of your fingers while your hand is on your dick. Therefore giving off the appearance of of having rings of cum.

"Man I ejaculated so hard I got cum rings!"

Cum Rings by Technomancer<3 May 31, 2015

Cum Ring 

The glob of cum that tends to land on the top of your index finger while ejaculating during masturbation.

Dude, i had the biggest cum ring on my finger today after i blew my load jacking off to midget porn

Cum Ring by KrazyKU February 22, 2009

Bobo Cum Ring 

White ring formed around a person's mouth similar to a clown (Bobo) from the type of chap stick made for 80s lifeguards. Tends to leave white, visible residue similar to those seen after the climax in clown porn scenes.

Dude what's up bobo cum ring? What's all over your mouth? Did you just blow a clown?

Bobo Cum Ring by The Widge February 11, 2010

Cum-drum ringer

The act of ejaculating semen into ones ear, then open hand slapping their ear. If done correctly the cum should penetrate the recipients ear drum, and cause permanent ringing in the their ear.

My fifth grade teacher gave me an F on my science report. So I gave her the old cum-drum ringer.

Cum-drum ringer by Kirbizzal May 20, 2016