This electrician appears way more talented than he really is.  It was one of those things you see out of the corner of your eye and for a second you’re like, “Holy shit!  That dude’s badass!”

At this point, a little focus goes a long way and you disappointedly realize, “Oh.”

Like half a can of Great Stuff with no straw when you have a gas line you need to foam in before you close up the wall, you use a protruding screw to knock a hole in the can and hope for the best.  For the record, it worked perfectly.  The only other trick I used was some duct tape outside to keep it from oozing out of the hole on the other side.