1- To masturbate , and ejaculate into an enemy's coat sleeve , and/or pocket when they are preoccupied .
2- One who wears a coat year round , and is not homeless
3- While getting you knob slobbered on , the person getting das knob slobbered on grabs the girls jacket , and strangles her with it intill he ejaculates in her mouth , and gasps for air . A method made popular by the punk rock group 'Murf and the Maggots' .
1- Alright , who's the wise ass who gave me a coatie ?
2- Those kids in my class are total coaties .
3- "So she was slobberin my knob right , and then I look over ,and saw her coat , so i mean OF COURSE i had to give her a coatie . I blasted my pants cannon when she turned blue.