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1.
To secrete or produce saliva. Usually over someone else whilst talking. This causes said person to be grossed out which results in comments such as "I asked for the news not the weather" or "Say it don't spray it."

Comes from the word 'Gob' meaning 'Mouth.'
"Ew! You just gobbed all over my food!"
Or
"You just gobbed on me!"
by BoogerBrain July 31, 2006