Vegetable mode
When a blackberry's battery is so low that it does not allow the user to text, call etc basically making it a vegetable.
I couldn't find my charger, so my Blackberry was in vegetable mode for 3 hours!
Vegetable mode
When braining gets to hard so you decide to binge watch tv shows for the rest of the day/week/month/your life
Aight imma turn on vegetable mode to get myself through covid