I know in the late 2000's in Calgary was a MAJOR streaking binge for the labour day game. It was even on YouTube for some time (maybe still is). It was at LEAST 7+ different clowns who proceeded to jump on the field almost in single file every few minutes. There was too many of them for security to handle and one of the latter fools got to center field and ran around for quite a long time. Idiotic, but absolutely hilarious at the same time! Like some Monty Python skit! Twit Olympics! One guy had a problem getting his shorts off and they tackled him pretty quickly. CRAZY! I was at that game and remember it vividly as the drop off point was right across the field from where I was siting. I almost "died" from gut wrenching laughter over that insanity!
After that game the Stamps slapped up barrier where these fools all jumped onto the field from (NW corner of main grandstand). I have seen no streakers at McMahon since then, at least for games I went to or watched on tv. Has to be some kind of record for the CFL or ANY sport on that day!