A mike tyson is someone who is very rough and arrogant. They like to fight and stand up for their rights. They can be a good friend because they will always stand up for you when you need it.
person 1: Can I have a pizza?
person 2: No.
person 1: UGHHHH *punches person 1*
person 3: OMG! why did you punch her? Are you mike tyson?!!
When someone gets upset usually about something that everyone else thinks is funny usually while in a drunken stupor, and decides to bite the closest person, usually on the ear. Can be in anger or in a sexual manner.
Aliya: How was your night last night?
Vegas: My night was good but I saw some crazy bitch Mike Tyson a kid. He turned and punched that bitchin the head.