does dirty bulking work or is it a meme? can I get big by dirty

You'll get big but you'll also feel like shit
You might even gain more muscle, given that you still get enough protein, but it'll take longer to cut so it's not worth it
DONT DO IT UNLESS YOU'RE PURELY GOING FOR STRENGTH AND DON'T MIND BEING A FATASS

"dirty" bulking is just bulking but not eating clean.
it can actually fuck your shit up due to "dirty" foods often just being carb heavy sugary shit with no protein. I had a mate who went on a dirty bulk. He figured if he simply ate a lot, there was no need to track anything. After 3 months and no progress on anything but his pant size, he started tracking shit. Was eating 4000+ calories a day, and barely getting 150 proteins. Turns out potato chips, hot pockets, egg rolls, and pizza don't contain much proteins.

Honestly, your cutting and bulking diet should be basically the same. Just with more carb sides like bread/rice, fattier meat cuts (aka less chicken you lil gook shit), desserts after dinner, and less of a strict restriction on snack foods. All that could easily net you an extra 1000 calories a day.