KABOOM goes Dad's ACL By : rich 29 February 2004 0 Calvin Calvin’s latest stumper while playing hangman. I was totally stumped by the Kaboom word. Grace does a nice imitation of Dad’s groans as he tries to get 120 degrees of flexion. Share this:TwitterFacebookLinkedInWhatsAppMorePrintRedditTumblrPinterestPocketTelegramSkypeEmailLike this:Like Loading... Related Post navigation Previous Previous post:Next Next post: