Lost halo reach video?

There was this one video I saw in 2014 how a grandma got an (accidental) double kill with a grenade in halo reach.
Ever since I was trying to find it. Can someone help? And if it even exists, my memory does that, makes up some events and tricks me…

I cannot give more detail because I just don’t remember, it’s not even in my “Liked videos” on YT.
Might not even have been on YT…

Please help :wink: