I am reminded of a childish diversion,
(from the days when there were only two television channels)
called 'Staring Out'.
It was quite simple.
You would simply assert,
whenever there was a slack moment,
'I bet I can stare you out.'
It worked best if you happened to be sitting opposite each other,
perhaps at the dinner table,
or on a train journey.
You then widened your eyes,
lowered your head
If they blinked,
you shouted,'You blinked, you blinked.'
They would then hotly deny that they had
and the game would end with mutterings.
Holding your eyelids open was cheating.
In the above impromptu contest,
both sheep won.