Foil is the worst thing to smoke out of besides plastic of course...so whoever used the foil and the plastic pen chamber you're asking for toxic vapors...buy yourself a cheap glass spoon if not for the artwork on it then at least to save your lungs and possibly your life (using a pen for the shaping of the foil is a HUGE no no...)

I've heard smoking foil can fuck you up in the long run. all those chems used to clean and manufacture it i wouldn't want to play with them.

i made one kinda like that last night and smoked it. it was great if made right. but if its just foil, it heats up and burns your fingers.  i just shortened mine down and stuck it in a pen tube and it worked great.

I dunno about that...

Shitty.