Paedospeed.

When (usually) a car full of boys are driving along and they see a hot girl walking, they reduce the speed the car is travelling at, in order to get a better look at the girl. This is known as 'paedospeed'.

Even funnier if the girl is jb.

Girl: 'I was walking home from school the other day and a group of guys in a car beeped, and then dropped down to paedospeed. The one in the back looked desperate'.

XD