Glasses

This requires a large beer glass so almost certainly is not a sensible technique for non-Europeans and reallyonly works with confusion.

Take a part of modeling soil and put a spine into it so that the pointed end points out. Place this near the edge of a table, break off a bump a cannabis resin and spear it on the spine (heating it gently first might help). Then place the bump of cannabis in the blaze of a lighter until it burns and speedily place the glass over it. If the cannabis is actually on fire at this point quickly blow the flame out first, you just want it on fire not actually burning. The glass will then fill up with smoke, leave it until no more smoke is coming from the cannabis. Then slide the glass to the edge of the table and suck the smoke out of it.