Kidney hangover

Everyone gets hangovers
but mine are kinda special
I don't get them in my head
I get them in my kidneys!

How can kidneys be hungover?
yet they twist and writhe and bite
like two horny snakes
trying to fuck

And everyone gives me advice
Drink water! Shower! Spew!
Eat fry ups! Run! Wank!
Pah, I do all those anyway

But no one offers me THEIR kidneys
all fully functioning
with perfect nephrons.
Damn those tight fisted bastards