Is a word to use when not knowing what to say, or when being asked a question you don't know the answer too. A word with no true meaning so can be interpreted however you want.
Jimmy: "Will you marry me?"
Charles: "bloop"
Bloop means I love you in a weirdo language
Boy: I bloop you
Girl: I bloop you too
When a guy cums in a girl and she stands up and the cum makes a bloop sound.
Guy: Yo i totally blooped my girl last night and she scurried away to the bathroom