This is a regular verb. It follows the conjugation pattern of the verb comer.
PresentPresente
Siempre me como toda la pizza.
I always eat the whole pizza.
PreteritePretérito indefinido
En la reunión te comiste varias palabras.
In the meeting you swallowed several words.
Negative ImperativeImperativo negativo
No te comas las uñas.
Don't bite your nails.