Last summer my friend who smokes pipe tobacco suggested mixing some of his with the sheesha, 50:50. That knocked a few of my friends out while we smoked. Later I started smoking ecigs. I decided to try the same thing, pouring ecig juice on the sheesha after packing. We had four people and two of them were laying down within 10 min. Since then we do it occasionally, especially if we plan to smoke at a party and don't want a ton of strangers hogging hoses all night. Perosnally it is the only way I ever "feel" a nicotine buzz while smoking. If anyone else has done this, or wants to comment after trying it, I'd love to hear your feedback and suggestions, especially flavor combos.