So this is by Roy Leichtenstein

I stood in the rain outside a Hanoi art gallery, "Classic Street", which specializes in Reproduction Art.

The painting I was staring at was this one:

I thought the message was a bit too depressing. So I asked for another one. The other one said "I am going to turn 40." Wtf.

Anyway I admire this style a lot and kept hunting for the artist name. Looking at the colors used, I guessed that it would be in the same period as Andy Warhol, and that it would be Pop Art. But I didn't know who was the artist.

Turns out it was Roy Leichtenstein. I managed to find him after finding another painting done in his style