grin like a mule eating briars

English

Alternative forms

• smile like a mule eating briars

Verb

grin like a mule eating briars (third-person singular simple present grins like a mule eating briars, present participle grinning like a mule eating briars, simple past and past participle grinned like a mule eating briars)

1. (US, simile, colloquial) To grin very widely.