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.

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

a blow job and its fun

A hum-job is a blowjob, where the guy doing the sucking - hums! The vibrations on the dude's cock-head cause him to have an historic cumgasm when he blows his load.