Meaning Awesome or incredibly. But primarily used in reference to Usain Bolt, the world’s fastest man. The term was coined as part of a promotion by CarMax called “Usainly Fast Offers” where CarMax challenged Usain Bolt to race against their super fast online offers.
Dang, that was a usainly good commercial!
I just got a usainly fast offer on my car from CarMax
well fuck you if you do this. don't. don't say something is 'autistic' if you think its weird, don't call someone autistic if they're not, don't say 'autism' with no context as if it's a joke- it's not. seriously, fuck you if you do this. stop it, get some help, anyone with any type of autism is better than you.
Person 1: "hey did you hear insert dickhead's name using autism as an insult?"
Person 2: "yeah, let's go beat them up and call them neurotypical."