Of course when I say 'accident' what I actually mean is that I want you to publicly piss yourself. Still interested in this cube, then read on.
1) You will wear no underwear and a pair of light blue tigty jeans, preferably skinny jeans.
2) You will go to a shopping centre at a busy time, trust me you don't want it to be a time when it easy to get attention.
3) You will then when in the middle of a crowd piss yourself, make sure to keep walking and try to avoid the accusing glares as a wet stream follows your footsteps and a sections of your jeans darken.