go mad

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go mad (third-person singular simple present goes mad, present participle going mad, simple past went mad, past participle gone mad)

1. (intransitive) To become insane.
2. (intransitive, informal, typically followed by "and", plus a second verb) To do something extravagant.

   Let's go mad and have a bottle of wine with our lunch.

   Here's fifty pounds in case you see anything nice to buy, but don't go mad.

3. (intransitive, informal, usually as a past participle and preceded by a noun) To reach an excessive or ridiculous level.

   Why should we ban controversial speakers from college grounds? Surely that's political correctness gone mad?

• (to become crazy): go crazy, go nuts

• dogma