A guy used fins in the swim portion of ironman florida, got stopped by a race marshall, gave a wrong number, then continued to race, then did new york marathon the next day with a sign on his back saying he did ironman florida the day before.
ironman is a 3.8km swim, 180km bike, marathon btw...
some pretty funny photos in here...
http://forum.slowtwitch.com/gforum.cgi?do=post_view_flat;post=2075494;page=1;sb=post_latest_reply;so=ASC;mh=25;
face was blanked out to begin with...
and from the marathon: