(verb) The act of performing highly skilled fellatio in such a manner as to provide great joy to the recipient.
His girlfriend knew how to knob-slob like there was no tomorrow.
by The Empress II October 25, 2010
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Dude, I got a wicked knob slob the other night. The girl was like a vacuum.
by ravenshadow October 6, 2003
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Girl who doesn't swallow or lick cum off a penis when she's done leaving it all messy.
That girl is such a knob slob, she refuses to swallow.
by Anonymous October 29, 2003
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Ass kissing! Stroking someone elses ego to get in good with that person. AKA brown nosing.
3 friend situation. When all three are suppose to be besties and one friend is always slobbing ones knob on FB and IG. With the third friend she never shows any love with comments or likes. You can see right through her knob slobbing ways!!!
by Smiling eyes September 14, 2013
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person who gives messy head (knob=head of penis; slob=messy, untidy).

See also knob slobber.
Erotic magazine advertisement, ca. 2004: "You can go from knob slob to blow job champ (by buying this book) . . . "
by al-in-chgo June 17, 2011
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slobbing the knob across the length of the shaft as if eating corn on the cob
"Did you hear that Luke's mom corn cob knob slobbed Matt last night?!"
by B218son May 3, 2010
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