@jessiscah24 to hoist is to raise something up

to be "hoist by one's own petard" is to be harmed by one's plan to harm someone else

A petard was a small explosive device designed to blow up gates and walls, in modern parlance, a breaching charge

So to be hoist by one's own petard is to be raised (blown up) by your own bomb

The phrase was used by Shakespeare in Hamlet

In terms of memes, fucked if I know