Catheter
I was much more conscious of not hurting my abdominal muscles trying to get out of bed than I ever was about the catheter. I never noticed any urges, and the only way I did notice it was if somehow the tube pulled.
Coming out was interesting, because there wasn't enough lube. I think I know what the clap feels like...
As mentioned above, a very cute and young student nurse took mine out. When she was done, I thanked her for not laughing at my equipment.
Pulling the drain from my gut was a much bigger deal, and even that wasn't all that bad.