All mouth an no trousers

phr.

Heard in Tipperary

One who talks boldly but lacks the courage to follow through.

That lads all mouth and no trousers

Posh English

That fellow can talk the talk yet utterly lacks the courage to act.

Related terms

• Mouth like a Lough Erne pikeA person with a large or loud mouth.
• Shut your mouth before the birds start nesting in itStop gawping and close your mouth.
• Motor mouthA person who talks incessantly.
• Mouth on himA person who talks excessively, loudly or spreads rumours.
• He hasn't an arse left in his trousersUsed to describe someone who loses a lot of money gambling or drinking.
• She'd suck a lemon through a length o wavin pipeTha' wan is the town bike. That woman over there that we know has such a filthy mouth…