A Crowded Coop - Portal 2 Metal Safety First Sign.

It's an excellent tin wall sign from the acclaimed Portal

video game series by Valve! If you love the Portal video

games, and you also love following the rules and safety,

then you're going to love this Portal 2 Safety First Tin Wall

Sign! It reads:

Accidents Hurt

.You! You will be hurt.

Coworkers! Don't endanger others.

The Company! Replacements are costly.

Science! Investigations impede progress. Safety First!