Custard pudding ≠ lube FOR GOD'S SAKE!!!
Semen has good slip but most men can't produce enough if it for it to be effective as lube. Don't do that to your bottoms.
Another vote for lotion - still doesn't make it lube.
Lotion isn't meant to go in your ass XD
Hot spring water mixed w/ oils is not as bad as body wash but COME AWN! Shared bath water ≠ lube!
Body wash ≠ lube