Company Wile E. Coyote always ordered his equipment from, usually with disasterous results. Now in use to denote a shoddy, cheap, or inferior product, the use of which will probably lead to certain doom.
We needed a professional welder, but all we had was Doug and his Acme set.
My drums were stolen, so I'm getting by with this Acme set.
The good news is, they finished my x-rays; the bad news is, I think I saw 'Acme' on the side of the machine.
(Squinting at footage of the shuttle blowing up) Wait... I see... a... c... m... e...