Sauce? All I can find using reverse image search is all that meme crap.
weird expressions are usually by Joseph Ducreux, but it doesn't seem quite his style. must be a detail from a bigger painting i guess? it's dark enough for a Rembrandt for sure...
>>128083
Thank you for your time, Anon. I appreciate it.
Some pages attribute it to Joos van Craesbeeck , A man surprised
>>128369
similar
http://www.mystudios.com/artgallery/J/Joos-van-Craesbeeck/Caricature.html
Apparently it was the first painting bought by Alfred Bader and attributed to Brouwer. That's why it appears on some covers of his books.
https://en.wikipedia.org/wiki/Alfred_Bader