Those damn lepherchauns stole your weed...Don't worry they stole mine once.

On a serious note, check your baggie and see if you really packed it. Then take a lighter/flashlight to where youw ere sitting,and search for it, look on your clothes, everywhere....
IF you still don't find it...

It's all about consiperacy.....Damn those lerpherchauns

Good luck finding your weed man, and hope all goes well.