Is it necessary that a phrase used as idiom always works as an idiom? Like I want to say:
Don't linger in bed.
I mean to say that: Get up now. Hurry up. Don't delay getting up. Don't sleep too much.
The child I am waking up is delaying getting up.
But the problem is that 'in bed' also means "to have sex".
https://www.oxfordlearnersdictionaries.com/definition/english/bed_1?q=bed
If the situation is clear that father is waking his child but the child is not waking up, will this [Don't linger in bed.] be acceptable?