eat and leave no crumbs

bite to eat

A snack or quick meal.

cake crumbs

Hardly anything.

don't shit where you eat

One should not cause trouble in places, groups, or situations that one holds as important or necessary to one's happiness or well-being.

eat an elephant one bite at a time

To do something one step at a time; to do something in steps rather than all at once.

eat away

To physically corrode or erode (something) gradually.

eat crow

To recognize that one has been shown to be mistaken or outdone, especially by admitting that one has made a humiliating error.

eat dirt

To eat humble pie.

eat for two

To be pregnant