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
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"