What is 45 Miles Per Hour-er?
Someone who drives at a constant 45 miles per hour, regardless of what the speed limit is on their section of road. They'll happily speed dangerously through a residential area where the limit is 30, and then hold everyone up on a main road where the limit is 60.
"Hey dude, is this guys speedo broken?"
"Nah, he is a 45 miles per hour-er"
"O ryt. What a noob"