It's a double edged sword. It!s a double edged sword...

Did you know, that on a double edged sword, both edges were used to cut the enemy?

@LukeAlmighty how the fuck are you going to hold a double edged sword
the cake expression also makes perfect sense, because you literally can't eat your cake and have it, too

@tomie
I am literally eating something I have right now.

@LukeAlmighty and when you eat it, you won't have it anymore

@tomie
But I would say, that having something is a prerequisite for eating it.

So you must have something to eat it too.