Not the sharpest knife in the drawer.
Got into the gene pool while the lifeguard wasn't watching.
A room temperature IQ.
Got a full 6-pack, but lacks the plastic thingy to hold it all together.
A prime candidate for natural deselection.
Bright as Alaska in December.
Gates are down, the lights are flashing, but the train isn't coming.
So dense, light bends around him.
If brains were taxed, he'd get a rebate.
If he were any more stupid, he'd have to be watered twice a week.
Was left on the Tilt-A-Whirl a bit too long as a baby.
Wheel is turning, but the hamster is dead.
His men would follow him anywhere, but only out of curiosity.
I would not breed from this officer.
He has carried out each and every one of his duties to his entire satisfaction.
He would be out of his depth in a car park puddle.
This young lady has delusions of adequacy.
This medical officer has used my ship to carry his genitals from port to port, and my officers to carry him from bar to bar.
Since my last report he has reached rock bottom, and has started to dig.
She sets low personal standards and then consistently fails to achieve them.
He has the wisdom of youth, and the energy of old age.
Works well when under constant supervision and cornered like a rat in a trap.
This man is depriving a village somewhere of an idio
If the enemy is in range, so are you.
Incoming fire has the right of way.
Don't look conspicuous, it draws fire.
There is always a way
Professionals are predictable; it's the amateurs that are dangerous.
The enemy invariably attacks on two occasions:
When you're ready for them.
When you're not ready for them.
Teamwork is essential; it gives them someone else to shoot at.
If you can't remember, the claymore is pointed at you.
The enemy diversion you have been ignoring will be the main attack.
A "sucking chest wound" is nature's way of telling you to slow down.
If your attack is going well, you have walked into an ambush.
Never draw fire, it irritates everyone around you.
Anything you do can get you shot, including nothing.
Make it tough enough for the enemy to get in and you won't be able to get out.
Never share a foxhole with anyone braver than yourself.
If you are short of everything but the enemy, you are in a combat zone.
When you have secured an area, don't forget to tell the enemy.
Never forget that your weapon is made by the lowest bidder