The Kramers

Hella rad punk band straight outta da East Bay. They don't play around.

Jerrys' weirdo neighbour from the T.v show Seinfeld. His first name is Cosmo.

-verb
To open a door and step into someone's house or apartment unannounced, typically with a dramatic spasm of the head, concerned look on the face and messy hair.

Popping in through a door or into an office cubicle so fast that the occupant therein never hears you coming and loses bodily fluids (or at least is really startled). Think of how Kramer always entered Jerry's apartment on Seinfeld.

Someone who habitually bursts into doors unexpected. This can be at an office or at somebody's home or apartment. The intrusion causes negative attention from everybody in the room. It can disrupt conversation, ruin appetite, or cause a major cockblock.
In the tv show Seinfeld, Kramer is Jerry Seinfeld's neighbor who always opens the door to Seinfeld's apartment uninvited.

The crazy, lovable, funny neighbor (played by Michael Richards) of Jerry Seinfeld on the greatest sitcom ever, Seinfeld.

Used after one inadvertently Calls another person the N Word. Can also say No Mike Richards