The movie "Sky High", chuckle

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The movie "Sky High" is current in theatres. It is
a farce about children of superheroes being sent to
a high school specifically for young super heroes.

In one scene the kids are assembling ray guns. The
instructor chides a student "No, no, no. You can't
tell the difference between a beam and a ray!" I
was the only person in the audience who laughed at
the one. It's a regular topic of discussion here. ;^)