bomb proof 

An object that is apparently indestructible. Often used in reference to anything that has been overbuilt or had additional material welded to it.

Mike's new BMX is bomb proof!

bomb proof by Chris Allen May 4, 2005

Bomb-proof 

To be be immune to almost every possible jumpscare where one would barely flinch, if at all.

I nearly crapped myself playing that game, yet here you are breezing through it. You're so bomb-proof!

Bomb-proof by The Amazing Meh-man June 2, 2017

Bomb-proof horse 

A horse that is very well trained and calm, that isn't easily spooked. Term originated for Military horses who must be "bomb-proof" so they don't spook at the sound of a bomb/gun/etc.

Children's riding ponies often must be bomb-proof because kids tend to run and jump and make loud noises--all things that might scare an ordinary horse and cause him to hurt somebody.

My old mare Goldie was a bomb-proof horse-- We could drive the tractor right past her and she wouldn't even flinch!

Bomb-proof horse by WolfPatronus August 28, 2011

bombproof

Indestructible, being constructed of such materials and in such a way that much abusive handling cannot cause considerable damage, if at all.

Dude, your car just drove over a landmine and you survived! That thing's bombproof!!!!!

bombproof by Genital Apparatus September 22, 2005

bombproofcell 

lord of all lords, sexy but sweet and kind, worshiped by all and loved by many

well fit, lord of all lords

bombproofcell by michael tulley (bombproofcell) May 9, 2005

bombproof

Describes a horse or pony so calm and well trained that nothing scares them

"Awesome to see the modified hoyer (total) lift in the arena and the horses seem totally bombproof around it"

bombproof by HasFurTwins April 6, 2017