More specifically - the over flow! 
All I want is to be covered in water up to my neck. All my bath wants is to give me as little water as possible and leave my boobs and tummy sticking above the parapet to freeze off!
I run the bath til its full, get in, and enjoy the first minute while I am totally covered with water! But then the over flow takes all the water I want away!
I have been very tempted to block up the overflow, but worry about DP and DS flooding the house!
I can't even leave the tap on to keep it topped up, as they are separate hot and cold taps, which don't give me the right temperature if run while in bath! (One foot burns, and the other freezes!)
I would say it is my own fault for being a fat bugger, but I've been a thin bugger too, and it didn't make any difference! I'm now a fat pregnant bugger and the level of boob/fat that is above water is still the same as in my non pregnant state!
Surely others suffer this dreadful infliction!
So, AIBU to get mad at the bath?! 