I used to say got em back in the early 2000s. So by default i don't think its annoying. It was annoying though back during its peak, when me or my friends would say it literally like every 3 minutes.
I still say it a lot nowadays, especially when I'm playin bball. Oh, and u can't just say 'got em'. U gotta say it with emphasis, lol.
GOT EM!