be honest and give him like 10 bucks its like when u steal something from the store and u get cought, u have to pay the price of what u stole plus another few hundred buck, im sure he would be happy with 300 dollars, but as to not bust you bank wide opean i would say 10 to 20 dollars is a sufficent amount for the horrible thing u have done. but then agin i have done it my self, except it was my sister or my girl friend and i always smoke them out so i think i deserve a extra bowl for my own way of smoking. and i usaly load what i take with them anyways.