If you think your freind May be telling porky pies (lies). about getting done.
ask Him to show you the Charge sheet.
If he cannot produce his Charge sheet then he is more than likley Lying to you and kept the shrooms for himself..

But If he does show you the Paper that says he was charged with possesion/blah blah.
then deffenetly appolagise and dont ask for your cash Back..