Nippleception 

The disease in which you have a secondary nipple on top of the existing one, usually via an extra flap of skin. Many would call this a tumor but they don't know what the fuck their talking about

Tim : Hey man did you hear about Chris and his nippleception?
Bob : Yeah, but isn't that just a tumor tho?
Tim : SHUT THE FUCK UP YOU GODDAMN CUNT

Nippleception by Moist Jeb May 9, 2019

Nipplection

When the nipples on either a man or woman become hard and erect. Specific erection of the female nipple is known as essection.

Look at her! She has got some serious nipplection going on.

Nipplection by Talvin September 25, 2005

nipplerection 

An erection of the nipples.

"OMG my nipples are hard, it a nipplerection!"

nipplerection by Justin J. L. August 20, 2006

nipplerection 

To administer a nipple or nipples rectally.

"The nipplerection in that porn movie nearly made me shit myself."

nipplerection by somethingplex1 December 16, 2011