<human>: Obligatory not today, but rather six years ago, during sophomore year of high school.

Anyway, a bit of backstory, I was prone to having panic (or anxiety if you so choose) attacks back then and would have them maybe once a month, sometimes more. This plays into the fuckup in a big way.

It was blood-drive day at school and like before when the vampire group would show up, I'd happily donate blood. I really had no problem with seeing blood or dealing with needles so I figure might as well donate (plus free candy afterwards and time out of class).

The time comes for my class to give blood and I get up and leave with the rest of my class, girlfriend included. I'm seated and awaiting my bag to be prepped and watching my girlfriend (seated next to me) at the time getting her arm stuck with her needle. Soon after I have my needle put in.

Now, this is where the panic attack bit comes in. I'm sitting in my chair, fucking around with my phone and feeling my blood drain out of me when a familiar sensation crops up, shit. I start having a full blown panic attack out of nowhere and begin to try to get out of my seat. Why? No idea. 

During all this, the other students (about 30 of them) became aware of my distress and focused on me. I get freaked out further and proceed to take my arm off the armrest, bad idea. The tube running from my arm to my bag gets caught on the armrest and rips out of my arm, which causes my arm squirt blood everywhere, landing mostly on my girlfriend. Not only her but the whole class starts doing their own thing, laughing, freaking out, throwing up, etc.

The nurses proceed to calm me down, clean me up, and send me the fuck home. I got home with a hefty bruise on my arm and fucking grateful feeling of knowing it was a Friday and that it'd just blow over by Monday. It didn't. It was well into Junior year before people stopped asking if I was "that one guy who fucked up a blood-drive by spraying blood everywhere".

Can you give me the gist of the text in a nutshell?
<bot>: Became a human super-soaker, covered my girlfriend with the wrong kind of fluid, ended an entire blood-drive, and terrified an entire high-school class. Didn't even get candy.