by Colleen Yergacheffe May 6, 2006

the practice of your partner,taking the whole of your scrotum,in the mouth and humming.(yes humming)..thus sensation is overwhelming,and climax occurs almost immediately.
by yosean March 30, 2003

Oral sex of the penis performed by a toothless individual. Such persons Mike include an old woman or a toothless prostitute.
The old lady I met at the grocery store followed me back home and gave me a gum hum.
That toothless meth whore gum hums really good for $5.
That toothless meth whore gum hums really good for $5.
by Eaton Holgoode April 11, 2017

by DennisKilla November 21, 2003

by flingshot January 25, 2005

"I hum far too much johnson for my own good."
"I have an idea, how about you hum a johnson!"
"I'm gonna go tame that ass."
"I hooked up with a bitch last night."
"Did she hum your johnson?"
"Naw she gave me that gum job cus she had no teef."
"I have an idea, how about you hum a johnson!"
"I'm gonna go tame that ass."
"I hooked up with a bitch last night."
"Did she hum your johnson?"
"Naw she gave me that gum job cus she had no teef."
by POISON DART August 25, 2008

When a female (or homosexual male) has had so much sperm ejaculated inside of them (anus, mouth or vagina) that these areas actually smell like old sperm.
"Oh man, I took Scarlet home last night."
"How was it?"
"Terrible, she had a wicked case of cum hum."
"Oh man, that's horrific."
"Tell me about it, I almost threw up."
"How was it?"
"Terrible, she had a wicked case of cum hum."
"Oh man, that's horrific."
"Tell me about it, I almost threw up."
by MattyHavoc January 31, 2012
