Referring to the S on Superman's chest. When someone walks around like they got a s on their chest, they walk around like nothing can harm them or like they're invincible or something.
when a guy tries very hard to date the woman he loves or he feels attracted to but she inexorably turns down all his romantic proposals or she commits for a date but never turns up
the phrase used to describe how one will angrily react to something that another caused to occur. When someone is so furious they will shit on anothers chest.. similar to "shit a brick" angry. The problem causer(s) will get their chest shat on... not literally.
1. My cell phone bill was 300 dollars over.. My dad is honestly going to shit on my chest.