A very loose woman who takes cocks just like coins being fed into a slot machine
That dirty old slotter has had more pricks than a pin cushion.
by Crazyhoop November 27, 2006
The act of purchasing an additional drink whilst the people you are in a round with catch up with you.
"You two still have over half left, I'll get a slotter"
by d1sco January 05, 2007