Dude I totally forgot how to purl

Blame it on the new mommy brain if you want but I did knit the boy a hat shortly after he was born. I think I did my purl stitches correctly on that. Yesterday I was bored so I decided to start knitting a practice intarsia swatch and my purl stitches are twisted or something because when I went to knit the next row I couldn't get the needle to go through the front! I ripped it out (no biggie because it was only a 20 st wide swatch) but it happened again. I'm gonna Youtube it later. I really have no idea what I am doing wrong.