[kenshiromusou]

Originally Posted by masaegu

That's correct, of course, but to help you sound like a jive-talking 21st-century Japanese-speaker, we would say it 「はやっ！」or 「速っ！」.

It was "fast" too ( はやっ!), Masaegu先生。
ありがとうございました、Masaegu先生。