When uttered by the witty rake at a party, this spell will cause the wankers to ask him to repeat it and the tossers to laugh at each and every instance it is repeated... consigning them to be ever identified as such.
Try it, it does work. I employed it to identify 4 wankers and 6 tossers at a party last November. Careful how you use it though, it is potent and you will be reuired to suffer its barking, staccato utterance for months to come.
Other rakes will recognise it pythonesque heritage and smugly chuckle with you when the chosen wanker finally gets its sequence right and spatters everyone with his first ordered utterence of it. Then the tossers can all light up at once with sycophantic mirth like chuckling tracers in the party gloom, clearly targeting the object of your new found disdain.