Sixth Wheel 

That guy you invite to the amusement park that no one really likes that much, but you invite him anyways cause otherwise your five-person party would always require one person to sit awkwardly alone.

Tyler: Who's that guy?
Joe: ...Greg.... Sixth Wheel.

Sixth Wheel by TomTreeTop July 22, 2011

Sixth Wheel 

When you are not included in group chats and dirt by your friends. You are not included because your friends think that you are too innocent. You are basically the angel child, when you want to be a little ratchet.

Damn, I don't know why my friends won't tell my the tea I hate being sixth wheel

Sixth Wheel by diamond_OG June 14, 2016