Any idea what causes a perfect blackout

I hate blacking out. I don’t do it often and when I have it’s usually awful to wake up from, where I also usually don’t even get hangovers anymore (nothing special, I just use water and probiotics). But like three times in my life I’ve completely blacked out and woken up feeling incredible, but also like off from how weirdly good it is. Once was 2 and a half shots of everclear when I was in college, another time was when I killed a bunch of Halloween booze beyond any reasonable healthy limit (and apparently projectile vomited for the only time in my life at some frat house I’ve never been to before or after, haha) and was carried into my house in my underwear by four of my friends by my wrists and ankles (very confusing morning but they are so cool about it in the group chat, apparently I was ok to be around when I wasn’t throwing up, but my beer pong game had tanked dramatically). Happened again last night, drank like 4 shots of 80 proof, a coconut water cocktail, and a bottle of red. Definitely more than I intended to drink, meant to save that wine for that pizza I have in there, and I feel like I should be paying the piper rn, but I’m not. I feel. Awesome. I also blacked out so hard I thought it was 8PM when it was 8 in the morning. I’m also just kinda not used to getting 12 uninterrupted hours of sleep. It’s feels so weirdly good I don’t even know what to do with the energy. Also, now that I think about it, all three times I woke up around almost exactly 7:45AM. I have like a decade of experience with alcohol, no idea what causes these.