They've made their bed - Idioms by The Free Dictionary
(one) has made (one's) bed (redirected from they've made their bed)
(one) has made (one's) bed
One must endure the unpleasant situation that they have created. A shortened version of "(one) has made (one's) bed and (one) will have to lie in it" (and all similar variations). I don't feel at all bad that he has no friends after having sold everyone out on his way to the top. He's made his bed.
References in periodicals archive
It seems they've made their bed
and they're going to lie in it as far as Adam Armstrong is concerned.
We link every day goals into martial arts - for example, children will have to prove they've made their bed
for a week, before they can fully qualify for their next belt