wet the bed

• IPA^(key): /wɛt ðə ˈbɛd/

wet the bed (third-person singular simple present wets the bed, present participle wetting the bed, simple past and past participle wet the bed)

1. (idiomatic) To urinate in one's bed (during sleep).
2. (euphemistic) To go bad, to fail. Often said of machines; a euphemism for shit the bed.

• to wet oneself (nearly synonymous, whereas the distinction is wetting one's clothing while awake versus wetting the bedclothes, usually while asleep)

• bedwetter
• bedwetting

• piss-the-bed (pissabed)