Choices:
[a]. Walk away somewhere other than where you will be the victim. Just talk, try not to stare at any point.
[b]. Try quickly walking away while the people around you are distracted. But watch where you are going, so you don't bump into someone on accident.
[c]. If you feel uncomfortable standing up, excuse yourself and walk away. People won't be able to tell if you aren't going anywhere.
[d]. No one likes people that think they need to go to the bathroom or have a drink or two. You will be surprised how much more discreet a bathroom trip could be when you do not feel embarrassed.Choose from options above and answer: What most naturally follows?

How to hide that you peed your pants 
Excuse yourself from what you are doing. 
This can be hard in a large group of people. 
You will want to get up without attracting attention.
Answer:
[b].