I know that here I am pretty loud and obnoxious, but IRL I actually have like, really bad social anxiety. Especially when talking to guys. (Actually come to think of it it's usually only happens when I have to talk to guys I find attractive 
)
Sometimes it's fine, but other times it's like my brain does a blue screen of death and I can't even think of words to say.
Is there a way to get my brain working normal in these situations? I already taken anti-anxiety meds and they help a little, but not always.
Any tips to stop my goofy ass brain from crashing?
Two tips:
Find charismatic people who don't get flustered, and pay attention to their fuckups. Some people have the mysterious power to never accidentally say something dumb, get tongue tied, or space out, and I don't know how anyone learns such a power. But for most of them it's just smoothly moving past it, kindness, and enthusiasm. And that's something you can pretty easily just learn to mimic (it's mostly just giving you permission to not get hung up on it).
Sign up for improv comedy classes. Suffer through the worst social anxiety twice a week in a designated space and time, until the other times don't feel so scary in comparison.