Butter is not a good lubricant.
Neither is hand sanitizer.
I do not know this personally, but I was informed of this by someone who knows personally.
I didn't learn by actually using it. Of course not, that'd be silly.
I can see it now.
"Hey baby, c'mere and let me butter your buns!"
I knew a guy who tried to lube his girlfriend up using hot butter.
She wound up in the hospital with burns on her vajayjay.
If you need to lube up a girl before sex, you're doing it wrong and suck in bed.
That must have been awkward for the hospital staff.