2B1S
Stands for 'Two Birds, One Stone', which is short for the saying 'Kill two birds with one stone.'
Me: Why are you headed to the baseball game Tuesday?
Franklin: I'm picking up my parents from the airport at 10PM, so I'll be downtown anyway, might as well catch the game.
Me: 2B1S
Franklin: I'm picking up my parents from the airport at 10PM, so I'll be downtown anyway, might as well catch the game.
Me: 2B1S