Keep an eye on Sammy...

Dominic and Pia are playing in the living room.  We want them to play in the bedroom where Sammy is:

Daddy: Dominic! Pia! Come into the bedroom and play here.  And keep an eye on Sammy while you play.

Pia turned quiet and appeared to be looking at empty space a foot from the tip of her nose.

Pia: Daddy...how can I watch Sammy with one eye and look at my toys with the other eye?

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