Top Definition
The combination of slobbing on a nob and humming one's favorite tune.
"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."
by POISON DART July 28, 2008
6 Words related to Hum A Johnson

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