late to the party . . . as usual
fun game . . . i used to play it all the time with people with wristwatches . . . wait for them to check the time, wait another 10-15 seconds and ask them if they know what time it is.
usually got a 90% or so hit rate for them looking at their watch, again.
haven't worn a watch (except to make it on time for weddings, etc. of people i like) since i retired . . . don't miss it a bit.
ETA - just checked, old watch still keeping good time . . . last battery was 5-6 years ago, i think . . . cheap Timex electromechanical ($10).