Best kind of lubricant for l ?

Astroglide and KY Jelly are available at pretty much any drugstore. They are water-based, which is not absolutely required since you are not using condoms, but is nice for cleanup afterwards. Be aware that they sell both the regular kind and the "warming" and buy the regular... unless of course you want to try the warming. But lazily grabbing the warming bottle can lead to a partner with sensitive skin racing for the shower in a panic at an intimate moment:)