I'm guessing that the thought bubble for one of the guys standing and watching the race went something like this:
Oh what a lovely day for a race ... Wow it's already lap number 7. This race is just ... well ... racing by. Hee Hee Hee
Oh I hear them coming around again ... I wonder who's leadddddddddddd!!!! Whoaaaa What's ... RUN MOTHERFUCKER RUN!!!!!!
Gotta find me a quiet place so I can check my undies ?!?