A game played under the influence of alcohol where two or more players "swap" phones with each other and text whoever they want, whatever they want. Players can make limitations on who not to text. There is free range on whatever the player would like to text anyone in their opponent's phonebook. Usually leads to mass confusion and embarrassment.
Player: "Can I please borrow your car for a minute"
Recipient: "what the fuck dude why?"
Player: "Fuck, sorry. Swapsies."
Player: "Smell my dick"
Recipient: "You better be playing Swapsies."