Translation:I already know everybody.
Why is he pronouncing it like this?
our way to emphasize that we know EVERYONE!!!
Yes. Just כלום is more anything/nothing than anyone. Anyone would be אף אחד.
Are these sounds correct? כבר מכיר
What binyan is mkir? Is it the same as tsrikh?
You can look this up on Pealim. (Hif'il) https://www.pealim.com/dict/44-lehakir/
The ending lol
I guess כלום is always definite like Mom?