all wet
US /ɔl wɛt/
UK /ɔl wɛt/

1.
salah besar, keliru total
completely wrong or mistaken about something
:
•
If you think I'm going to agree with that plan, you're all wet.
Jika kamu pikir aku akan setuju dengan rencana itu, kamu salah besar.
•
His predictions about the election turned out to be all wet.
Prediksinya tentang pemilihan ternyata salah semua.