When 6-year-old ROBLOX players try to type in "oof", but they type in g since it's right beside f, but they send their message anyway because they didn't check for spelling.
"Oooooooog!" (watching fire)
"Oog?" (noticing "woman" for the first time)
"OOG! OOG! OOOOOOG!" (fighting monkey that trashed his cave)
"oooooooog..." (getting intoxicated)
To creep or gross someone out. Stronger than either "creep out" or "gross out"--to oog someone out is to both make them uncomfortable and feel slightly nauseous.