LOL is not healthy if we do not know what are we LOLing at. According to theory a joke is laughable because it creates inconsistent narratives and the laughing person automatically understands it and react with laugh. Cognitively if inconsistency is not resolved there should not be unnecessary laugh.
According to above this joke is not laughable because its inconsistency is not identifiable to a curious mind. For example, if bearded Deobandi asks for Rooh Afza at the same store would he be singled out as such and as a laughing stock?