Dustin hadn't quite seen it was a hundred. He'd mostly checked that it wasn't a one - some people thought handing over a dollar meant they'd tipped. Dustin thought that was like, a step above tossing pennies on the table and anyone who did that was a dick. Even he tried to leave TWO dollars, when he was broke. . . which was always. If he'd noticed, he probably would have gibbered like a monkey. Hundred dollar tips on big tables wasn't HUGELY out of place - though it never happened to him. But on a takeout it was unheard of.
"No problem," he answered. From inside, someone yelled his name, and Dustin winced. "See you around." He turned to head back inside, yelling that he'd been on BREAK, it was allowed.