Mic drop, all other heroes go home!
Boxing glove arrow actually happened in last night's episode, "Guilty". Enjoy the .gif above.
For people who do not get the reference, boxing glove is it the most popular of Ollie's collection of "Trick Arrows" which would be things like tazer arrows, smoke bombs, flashbangs, incendiary etc. In the comic of course. Last night TV Ollie used one of these, and it actually made sense!