How on EARTH do you clean the backside of a baby in the bath?

[RoooneyMara]

Please don't laugh at me. This is my THIRD but I can't remember how I ever did it.

When ds has a big poo (he is 6 months, ebf) and it goes everywhere, I just tend to think, that's at least ten wipes' worth of poo, I'll just put him in the bath/shower.

Ha.
How do you clean their bottom? It's underneath! I tried the mesh bath support thing and it didn't work, tried holding him with one hand, showering with the other - the poo just sticks and you need to wipe it off while showering with a flannel or something.

Tried standing him up, while holding him of course and he slithers everywhere.

I am stumped. I always end up wetter than he is as well.

HELP

Rinse the baby under the tap. That's what I do

DD is a poo-monster. We use reusable wipes. I got a fab ebay deal on Junior Joy cotton terry ones, no frills but do the trick. Even the worst poos only use 3 wipes (2 to wipe, 1 to dry). I use them with water only. Hubby loves them too.