Alec came across a hard hat (which was liberated long ago from a nuclear power plant, but that's a story for another day) and subsequently spent a good twenty minutes whacking himself over the hard-hatted head with increasingly heavy objects to see if it would hurt. When the whacking proved harmless, he took to throwing Ryan's work boots into the air and attempting to stand under them. When it became clear that he was not coordinated enough to pull that off, he settled for running headfirst into the wall.
If he had hit himself with my recent attempt at homemade cheese, he may have actually done some damage...