Not to generalize, but in general the best kickball players are straight males, then lesbians, then gay men, and finally straight women. It isn't always the case, but it seems like most of the time it is true. So the best coed kickball teams are usually made up of straight men and lesbians. They will also probably have the poorest sense of fashion.
Also, I have noticed that if you fart in public and are able to completely keep your cool and pretend like nothing happened, no one notices. Even if it is pretty loud. This works best outside, where the noise could have come from something else. The only way they will know it is you is if you are in an enclosed space and it smells.