When people don’t love and appreciate every member of a group
I have a head canon that Dean knows how to sew. John wasn't exactly a good homemaker so who else would have patched up Sam's pants whenever they got a hole in them? I just feel like its something he would have needed to learn on his own growing up to make clothes last longer because they didn't have a lot of money. I can't remember a time that this was ever alluded to in canon so that's why I called it a head canon, but do yo know of any evidence to support this?