Ba3bous
Ba3bous is the middle finger but with more swear words. It’s like the Arabic version of flipping the bird and giving a lecture.
My friend sent me a DM that said 'ba3bous' because I called him a donkey.
My teacher said 'ba3bous' after I drew a mustache on her picture.
My cousin yelled 'ba3bous' when I said his cat was fat.