Bozo is a name that references someone who has failed to achieve any level of formal education and is easily lead and influenced by anyone who appears sympathetic. Bozo will, because of their lack of of understanding of the english language, try and engage in conversation, but in almost all cases, will become irritated and abusive due to not understanding what is being said to them. A Bozo will make up stories about their achievements, but everyone knows that they are just fabrications. A Bozo is not smart enough to know that their lies have been discovered and will continue on prosecuting the lie.

The phenomenon of having to come out as bisexual to the same person/people repeatedly because they assumed or hoped that your sexuality was a "phase." Refers less to the holiday and more to the 1993 Bill Murray comedy film in which the main character experiences the same day over and over.

A bozo is one who writes definitions for urban dictionary.

A fluffy and lumpy dumb person who struggles through everyday activities like getting to work fully clothed and in one piece. Often used affectionately but with an eye roll. Said bozo typically wears tragically goofy footwear and has sleep in their eyes.

Someone who is intentionally irritating.

An incompetent person, especially in new companies. Bozos have a net negative effect on morale and profits, and everyone knows it.
I first heard this specific meaning of "bozo" during a talk to business students by one of Yahoo's founders.

1. n. A specific cartoon TV clown from the 50s and 60s, originally in B&W.

2. n. Any old clown.

3. n. Annoying person.

4. n. A chat or message board troll.

5. n. A feature of About and Delphi Forums, and some other Prospero Technologies message boards that allows a moderator to surreptitiously silence a bozo (3).

6. v. To use the bozo feature on a message board; p.t., bozoed. Bozoed is also the adj. describing the condition of one subjected to the bozo feature.