The act of performing oral sex on a woman (eat) and having to relieve one's self sexually (and beat) because she has no intention of allowing entrance to her moist caverns.
Sandy let me godown on her but made sure that I knew she wasn't going to put out, so I had to eat and beat.
The act of slipping into a buffet or a slightly high price restaurant, chowing your food in a hurry and hoofing it out before your check arrives at the table.
An act committed mostly by someone of the deadbeat persuasion, teenagers or snooty college students.