In the middle of a job, I stripped out of my coveralls, and did some arachnid induced cardio. Supposedly there was one on my collar. It was never found but I had felt something just as someone said on the radio, "You might want to swat that spider off your neck."
Ended up in my steel-toed boots, hard hat, safety glasses, and skivvies.
Would have been funny if the radio had fired up Y.M.C.A!