We FReepers tend not to move in sodomite circles, where such talk seems to have originated. I scolded my 25 year old son (straight) for knowing what it meant. But it is understandable since he is a devoté of late-night comics.
If your son plays video games - first person shooters like “Halo” - then that’s almost certainly where he picked the phase up from. I won’t say any more as I don’t want to extend the meme.