-I'M A GOD! NOT A DAMN BABYSITTER!-

You and Beerus stayed behind while the others (Whis, Bulma, Vegeta, and Goku) left to search for the seventh Dragon Ball before Frieza.

You stayed behind because you were never the one to put yourself in a dangerous situation.

Beerus stayed behind because there was no food where the others were going and it was nap time.

So Bulma put the two of you on baby watch which you had no problem with. Beerus on the other hand was not very pleased.