I’d have thought most Harry Potter fans would understand that to mean being unduly affectionate to rather boring people.
As it happens, I’m reading a German crime story which is coming up with some interesting new words for me - how about
*Rotzlöffel *(it actually means an annoyingly know-it-all young person who is still wet behind the ears; literally translates as “snot-spoon”)
Korinthenkacker (means someone who gets up everyone’s nose by being obsessed with nitpicking and irrelevant details, and gets in the way of whatever it is you’re trying to do - the kind of boss who times your visits to the loo and keeps a mental note of every minute of lateness; literally translates as “raisin-crapper”)