Lubricating PVC fittings to pre-fit

Hmmmm.... if that turn is *too* complex, I'd hang a sign on the toilet that says, "Flush Often, Please". Esp. with 3" pipe. Mebbe N'Yawkers just have bigger bowel movements? Our code is 4". Texas proly has a 6" code.... 48 oz steaks, donchaknow....

It's AstroGlide, and its origins were male-male. Still, given that, uh, demanding work environment/application, proly would work all the better on pvc.

I think hairspray has acetone or some other such solvent and might very well melt the plastic like the glue does.

the outlet on the toilet is 2.5 inches at best and most are 2". 4" pipe is overkill. And I've never seen 4" pipe in a house. It won't fit down a wall.

Four inch pvc fits in walls! In my last house there was one interior (non load bearing) wall that was 2x6 studs. They had some special name for it but I forget the name. In that wall are 2 4" pvc pipes, one for the plumbing waste vent through the roof and the other was put in and capped in the attic just in case I ever needed it for Radon abatement. I agree 3" is fine for the toilet. When the trap/path leaving a toilet gets to be 4", then maybe a 4" pipe would be needed. It is however very common for the main pipe to be 4" where the smaller pipes join and that normally goes out to the septic or city sanitary sewer.

for it but I forget the name.

Wet wall, waste wall, or utilities wall? (as seen in "The Matrix")

HIGHLY unlikely. that would make it be pretty toxic.

some msds files:

non-aerosol hairspray: