The act of taking a shit off of a ledge, while there are pedestrians under you. Your hope is to hit one of them.
San Francisco is the best place to thizzle twop because there are tall story buildings and a lot of pedestrians.

Merrick, you got one! Nice thizzle twop.
by U see the money I be countin! December 16, 2009
Get the Thizzle Twop mug.