I can't believe I'm using my first MeTa on this, but I'm looking for an AskMe thread from about 1-3 years ago in which a dad was asking how to deal with his toddler headbutting him in the groin. It evolved into a long stream of anecdotes about testicular trauma induced by the innocent little ones. I found it highly hilarious. The keywords I thought of to search on did not reveal the thread, and the mods I contacted didn't remember it either. Thanks.
OK, y'all just get over to Metafilter Music and listen to loud magic song. That is all.