Ignore and/or block. If it is really bad then report it.
Don't troll a troll.
Is it a hilarious troll or an obnoxious one?
Block, ignore and report :)
Flag it..to the left
OOPS Sorry I meant to the right
2 words; Block button.
tell us who it is so we can play too?..
See that big red shiny button right there? Click it...it's called blocking.