I did the same thing with the SL recently! Had the front wheels off to replace suspension parts, snugged the lug nuts, got distracted by a phone call, dropped the car to the ground and drove off. 15 minutes later, made a turn into a parking lot and felt the whole car wobble and shake. Pulled over and saw 4 of the 5 lugs hanging on for dear life! Got very lucky there was no damage.

I'm usually habitual about double-checking things like that, but we all make mistakes!

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Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]