Fruity Funnel
Requiring two people (minimum), the host inserts the end of a vape (e-cigarette) into their anus leaving the mouth piece exposed. The second person proceeds to take a puff whilst the host farts through the vape leaving a nutty after-taste to your chosen vape flavour. This can be chained Human Centipede style for a group of as many people as you'd like.
That's vape has an awesome flavour, have you tried it fruity funnel style?