Explanation Needed

Take a look at the glass.

Splitting, turning to shards,

Excited to dive onto the

Unyielding brick beneath.

Seamless a moment before,

The future was decided by

A sprightly rock, shooting,

Into what was thought to be

An unmistakably open window.

Gaining the attention of one,

Blanketed in ghastly shock.

Now time cannot be reversed.

Plan of a midnight outing,

Postponed until better odds.