when you realize the guy you are hooking up with, dancing with, etc. has a boner
Kevin "oh hello-ed" me at the dance.
(verb) When you are making out with your boyfriend and then he gets too excited and jizzes through his pants onto you.
(noun) An unexpected or unwanted surprise
(verb) "I can't believe he oh hello-ed all over me!!"
(noun) "I like you alot and always have" "oh hello!"