In case you’re wondering, it’s a minced oath-like reference to a saying that’s common in the IDF: לֹא מְאַיְּמִים עַל זוֹנָה עִם זַיִן lo me’aymím ‘al zoná ‘im záyin ‘you don’t threaten a wh–re with d—k’, i.e. ‘you’re not gonna threaten a soldier [e.g. the speaker] with this punishment [e.g. staying home for the weekend] because they’re too used to it by now’.
More such gems here (in Hebrew).
Two vavs together make a 'v' sound in Yiddish, but Hebrew works differently. And it's good to be aware that Hebrew spelling is often pretty flexible. A word like " יין" could be pronounced yeen or yayn in addition to 'yain' depending on the underlying voweling. And it would not surprise me to see someone spell it "יאין" just to make the vowel sound clearer. You see stuff like that all the time with names.
Stuff like "does the dove like wine" absolutely does not belong on the very first lesson of a language, which is purportedly about the letters of the alphabet, which is an alphabet that presumably almost no one who does not know the language is familiar with.
And it's not just "does the dove like wine". Pretty much this entire lesson is absurd. It should be thrown away and completely rebuilt.
Get used to it, in duo bears drink beer and doves drink wine. In part its to show new letters and partly to ensure you learn and don't guess, also its funny and funny, unusual things stick in the brain more easily. You Will find this easier to remember, just because you got irate and commented on how silly it was. There is method in their madness.
Some artists get paid for painting or drawing, and some musicians get paid for playing music. I doubt that means they don't like doing it, but I'm sure there are cases where people have to play music that doesn't inspire them or create drawings they wouldn't otherwise choose to make.