Straight Trash is a new disparaging term utilized in Facebook discussion threads to describe something that someone doesn't like or to exaggerate displeasure with a comment posted by another person.
It is often used in a sports-related context to express annoyance or aggravation with a player's poor performance, especially a star player going through a costly slump.
The term is sometimes used ironically and is often expressed as a hashtag, #StraightTrash. The construction often takes the form of an equation: Favorite Player + Poor Performance = #StraightTrash
Baltimore Orioles' starting pitching + high ERA = Straight Trash
#StraightTrash
Washington Capitals + NHL Playoffs = Straight Trash
#StraightTrash
That last comment you posted = Straight Trash
#StraightTrash