What is Pebbletossing?
1.
Romantic gesture.
The act of standing under the object of your affection's window and tossing pebbles at said window, to get their attention. They should go to and open the window, see that you are there, and then go to the front door to meet you.
Must be done at night to achieve proper effect.
He went out at 1 am to go pebbletossing at her house.
See