The incident occurred at 11:05 a.m. Tuesday at the Fresh Donuts store on the 3000 block of Lancaster Avenue, police said. A video with audio from the scene appears to show that the customer paid, but that a dispute arose over the amount, as the clerk appeared to say he was about $2.40 short. "I paid you for my sandwich, lady!" the increasingly agitated man shouted as a worker handed him a cup of coffee. The customer hurled it right back at her, eliciting a squeal from behind the counter and the concern of at least one other customer, who appeared to confront the coffee-chucker as he stomped out.