How did you break your arm...for the 5th time?

I am not often at a loss for words.  I'm a talker. However, recently in a doctors appointment with Dallin, I completely lost my mind and couldn't even think, nor speak, which caused for an awkward moment. 

Dallin has broken his arm 5 times!  His last break left him with some range of motion issues that I wanted to get checked out so I took him to a pediatric orthopedic.  The week before the appointment Dallin started tackle football.  Well, he has never played tackle football, and he was the newest kid to tackle on his team, so by this picture I think it's sufficient to say, "he took a beating the first week of learning to tackle". 

The doctor was examining his arms looking quite puzzled.  I said, "he just started tackle football", in which he just looked at me more puzzled, as if to say, "what kind of mother would let their kid do this?" (by the way, I had been thinking the same thing that week...seriously!)  He then asked Dallin, "How did you break your arm this last time?"  Dallin, being a very quiet kid, just looked at me like "what am I supposed to say?"  I meanwhile, completely forgot how he broke his arm this time and couldn't speak.  I was thinking, monkey bars? No, that was 2 other times.  Jumping off the retaining wall? No, that was a different time. It was a very quiet and awkward moment in the office.  Finally, I said to Dallin, "how did you break your arm this time?"  He, too, seemed to have a brain freeze but finally whispered, "heelies".  The Dr. couldn't hear him, nor could I, so I said, "what"...he replied a tad bit louder, "heelies", to which I exclaimed in relief, "Oh ya, heelies, you know those shoes with the wheels on the bottom?"  The Dr. just shot me another "irresponsible mom" look, but I was relieved we finally came up with the right answer!  Whew!  Needless to say I'm not looking forward to that follow up appointment.  I also didn't mention that Landon was with us and was a pretty mellow kid at previous appointments.  But he was going ballistic and they had given him a sucker which was all over him and his hands, which he got all over the doctors pants!  I have yet to receive the bill which might include a dry cleaning bill too!