by @TheRealCarlAzuz May 19, 2018

Something that "hums" (stinks) which also comes from your bum. i.e farting..guffing, trumping...bottom vapours!!!
by BFREASH February 17, 2010

a very skilled oral sex technique preformed by Naomi (that's i moan backwards) on Belinda (or vis versa) at super sex in Montreal. The tounge vibrates on the clit at a extreme speed, as if it were the wings on a humming bird.
"Boys watch this, this is called the humming-bird."
"Holy shit how do you get your tounge to go that fast, i got to practice that."
"Holy shit how do you get your tounge to go that fast, i got to practice that."
by clover April 8, 2003

vegitarian oral sex
i.e. no meat but two veg
this involves your "friend" placing the sack in their mouth and making a humming sound
this is extremely pleasurable
i.e. no meat but two veg
this involves your "friend" placing the sack in their mouth and making a humming sound
this is extremely pleasurable
by Rossgrebe March 26, 2007

Baseball chatter in which the infielders encourage the pitcher to fire off a fast ball, so fast that it hums. It was in widespread use in 1960s Little League (I know from experience) and probably predates that, so the Roger Craig origin in the mid 80's that several people have reported is simply incorrect.
by fireballxl5 July 20, 2014

When ideally a female but can be and anyone places your balls and your ball sack in their mouth and slightly makes a humming sound. This sends a nice vibration through your balls
MAN: hello sexy how bout some hum balls?
Female: I would like nothing more than to give you hum balls
This is a sexual act and a good one at that.
Female: I would like nothing more than to give you hum balls
This is a sexual act and a good one at that.
by Sir Nathan White February 17, 2009

Chris: "Hey, what are you humming?"
Ricardo: "Just making a new tune up. Doesn't it sound epic?"
Chris: "Yeah, nice hum jam."
Ricardo: "Just making a new tune up. Doesn't it sound epic?"
Chris: "Yeah, nice hum jam."
by antwonmarco14 April 10, 2012
