When the winter is finally over and it is just starting to get warm, you wear your short sleeve polo shirts to work rather than a long sleeve. This particularly applies to musclehead italians from the tri-state area who have been dying to show off their bi's and tri's all winter.

the act of showing your guns when in the presence of a day with heavy sun

A phrase used to indicate the arrival of a buzzsaw, especially when said buzzsaw is the topic of a rude discussion.