thinning is decreasing the viscosity, not boosting it.
honey is viscous
water is not
In other fields, a viscosity enhancer is used to increase the viscosity, but this is cannabis, so I would not be at all surprised to find folks marketing “thinners” as “viscosity enhancers”.
and sure enough…
a low viscosity diluent for boosting your viscosity?!? 
SHM