1.
Someone who performs the act of fellatio (oral sex on a man). A penis can be referred to as a 'knob'
That fuckin' knobgobbler wanted to go down on me!
See Nathan
2.
A man who gobbles on the circumsized end (knob)of another mans schlongwhile making a gobbling noise like a Thanksgiving turkey
Mmm of love sucking on yer knob billy... gobble-gobble-gobble! I am a good old-fashioned knobgobbler!
See felatio, suck, cock, blowjob, gay, homo, knob, wang, dick, shotgun, dildo, cocksucker, scat, anus, hard, balls, nuts, bag, scrotum, sack, sword, tony danza, come, spunk, jizz, jisim, junk, jackoff, creamy, sauce, knobgobbler