You probly made it wrong, or something to that effect, because I made one last night, and got fucked off my ass after one little nug. And my tollerance is high as shit... that's why I made it, I read a little while ago that theres a 95%THC transfer rate, if not 100% and your not even burning it..

Just don't use the tube. keep on the cap when your filling it up with smoke, then take it off and inhale. I didn't even bother with the straw, and god damit was I stoned. Only problem is I got too baked, and fell asleep with it beside me, pretty sure i rolled over it, cause it was fuckin' broke.