Meaning that a person popped off in a good way. They killed it. Almost as if they took all the talent and skills and did not leave enough in the world for everyone else.
Person A- *sings amazingly and surprises everyone with their amazing skills*
Person B- “Holy shit, she ate and left no crumbs for the rest of us!”
This often appears on social media comment sections, when someone is expressing their appluse to someone or something they did.
It also reffers back to the saying "he/she/they ATE that blah blah blah"