Oysters did this for me. Hated them growing up, even into my early adult years I still hated Oysters. The texture and taste just did not agree with me.
Then one Friday I had to go away for work for the weekend, I went to the local pub where I was staying for dinner, and the chef came out with like 6 Oysters for free, I tried one, then demolished the other 5, ended up ordering a dozen and demolished those. Been hooked on Oysters ever since
I smoked weed in high school, a fair bit lol, I was definitely considered one of the "stoner kids" of the school.
In my 20's I stopped for the most part (only a joint here or there, maybe 2 or 3 times max per year), many of the kids I went to school with that were all anti drugs and anti drinking as kids became hard drug addicts in their 20's.
Now in my 30's I smoke again, much easier now that I can comfortably afford this habit