New Kid on the Block, or Park.

At the dog park a new family brought their dog, which was not a wimp.  Being the new dog it was "the new kid on the block."  Some dogs growled and barked at the new one, some mounted its back and hunched.  And the new dog repaid the favor and mounted their back and did likewise.

During the hunching the mother tried to keep a impartial non-expressive face.  The three or four children did not hold back their expressions.  They giggled, smirked, looked puzzled, and the oldest, a teenage daughter, rolled her eyes.

Boy, I wish I had the nerve to boldly video their expressions!