To have experienced inferiority as a direct result of the actions of another party. For the expression "shat on" to make sense, there must be a recipient (the one who is "shat on") as well as a perpetrating party (the one who "shat on" the recipient). The perpetrator's actions or remarks can be bold, such as the actual physically shitting on the the recipient, or subtle, such as saying something to someone else that implies that the recipient is in someway whack or lacking a ballsac. However, the key takeaway from use of this expression is the fact that the perpetrator's actions, though they can be cleaned up (just as shit can be cleaned off of a toilet) are essentially irreversible, since the smell--not to mention the memory--of shit is virtually impossible to remove once it is dropped upon a target.
The charmingly aggressive, and yet so unfortunately cunning, young men virtually shat on their neighboringorganization's lawn of dignity by taking home the gold that night.
Person 1: I love apples!
Person 2: I hate apples lol they suck they are the worst fruit ever
Person 1: Wow, you just shat on my favourite fruit
By Olympe
Shat-shat
An exclamation of excitement for yourself or someone else. Origin: The excitement expressed when you realized you referred to William Shatner twice in one day