I do that all the time.
And try to poke moths with my cursor, when they land on the PC (not the monitor)...
It takes me a second before I realise that the cursor stops at the edge of the screen...
/hides face
(Fido Dido, Wed 8 Sep 2004, 22:26,
archived)
I've done that far too many times.
Also, while playing Medal of Honour, I have been known to duck to avoid bullets.
(Malchick, Wed 8 Sep 2004, 22:33,
archived)