We use coconut oil for everything. The stuff is unbelievable!
It doesn't dryout (like water-based)
It melts at body temperature - so it's a solid when we scoop it out of the jar
It's supper slippery and smooth - like silicone without the nasty side effects
It's food - so shoving some up your ass isn't a problem
When you're all done - your skin is smooth, soft and moisturized
All that - and it's dirt cheap! We use to pay $25 for a few ounces of lube. I get 4 lbs of coconut oil for $23 - no need to worry - apply the stuff liberally!