The results might depend on what the jar is made out of. For instance, if it's a glass jar, then having shards of broken glass stuck to you (or all over the ground, acting like caltrops) could be a bigger problem than the honey itself.
I vote for the condition "sticky". No penalty to movement, -1 to concentration, -2 to dexterity checks. It's not as bad as being entangled, but assuming we're talking about a winnie-the-pooh style pot here, that's a lot of honey. Getting hit in the face with a gallon of tar would have a similar effect. A little bit of bludgeoning damage wouldn't be out of the question either.