Someone who believes that their importance is equivalent to the importance of the sun. Of course, they are delusional.
Boy: "I'm just really great. Chris Young ain't got nothing on this swag bag."
Girl: "You better stop saying stuff like that or else you will get a big head."
When it's too cold to remove your clothes while reciving/giving head, so only the genitalia are removed from the clothing (man unzips fly and slips out his dick/ woman pulls down pants to expose the vagina)
Man it was so cold yesterday my girlfriend gave me EskimoHead