"You owe me 78 dollars" is a phrase used when sarcastically demanding financial compensation, when it is completely inappropriate. Legend has it that the amount of $78 is based on a true story, where a bill for car maintenance was split between the members of a road trip, to fix damage that occurred a year after the trip.
Jack: Aw man, I just got a photo radar! You owe me 78 dollars!
Kate: Why?! You're the one driving!
Jack: Yeah, but you're in the car too. I'll send you a paypal invoice.
Hugo: Dude, try the sushi. It's awesome.
Sawyer: Okay, but if I don't like it you owe me 78 dollars.
It's an English phrase to be used when you want the other person to know that they owe you something after you did something for them, usually either in the form of respect, or a favour.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."