all mouth 

All talk and no action.

<@Peter> If you talk one more time I'm going to kick you.
<@Dave> Do it bitch.
<@Peter> ...
<@Dave> You won't do it, you are all mouth.
** Peter has quit.

all mouth by TheLondoner December 14, 2008

All mouth and no trousers 

Someone who can talk a good game but cannot back himself up. Relies heavily on others who are his opposite (able, but a poor orator) to sort out any problems. One who makes idle threats.

Random13yearold: I'll hax your computer! I'll hack a virus!!!111

KFJ: You're all mouth and no trousers, but I'd love to see you "hack a virus".

All mouth and no trousers by kung-fu jesus August 18, 2004

Allmothug 

Gangsta rapper from San Francisco, California. He is known for rapping over West Coast G funk production.

Hey, look that's Allmothug getting his hair braided! I just heard his new album Tales from the Mission.

Allmothug by Allmothug March 23, 2023

all mouth 

tend to talk boastfully without any intention of acting on one's words.

"he thought Francis was all mouth"

all mouth by Arminkshipper August 5, 2024