It’s not a brand name, but there is a musical instrument called a “Jew’s harp.” It has a single metal twanger, gives the player a headache, and is much cheaper than most musical instruments. I don’t know where the name came from, but it has nothing to do with us chosen people. And I have never heard one played at a simcha.
Little Froggie: My son is an expert on Old Jewish Music. There have been so many bands in the past with funny names. I can’t name them all like he can, but a few come to mind:
Rashi and the Rishonim (The band leader was Rashi Schapiro – that is really his first name.)
Shmah Koleinu
Raya Mehemna
I think I’ll add products to the scope of this thread.
Bacon soap
One company sells bandages with the following on them:
Abraham Lincoln (text on the box: “I will heal your wound as I healed a nation!”)
The Scream [the Edvard Munch painting]
Shakespearean insults