you have to choose one or the other; cannot have your cake and eat it, too
When children are allowed to make choices, they learn that they can't have it both ways.
you have to choose one or the other; cannot have your cake and eat it, too
When children are allowed to make choices, they learn that they can't have it both ways.
Wayne Magnuson. English idioms vocabulary. Словарь английских идиом. 2012