Have a guy go into an enclosed area with a bunch of people such as an elevator or a public bus/taxi. Once in, secretly take out a bottle of 'Liquid Ass' and either spray a bunch or if it's a liquid spill some drops on the floor. Once the smell gets really bad and people are gagging or about to throw up...basically look around saying it wasn't you and blaming other people (such as the women).
Either that or do it in a crowded elevator but before you do the above, put brown paint or mud on your jeans on your ass so it looks like you've shit yourself already.
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