A done like
When you leave someone logged in on Facebook so you can prank them with a silly status, then log in as yourself and like it just to show them who had the last laugh.
I left my mom logged in and put a status that said, 'I ate 10 pizzas and I'm still alive.' Then I liked it and she knew it was me.
He left his crush logged in and put a status that said, 'I think I'm in love with my dog.' Then he liked it and she knew it was him.
She left her brother logged in and put a status that said, 'I failed my math test and I'm crying in the hallway.' Then she liked it and he knew it was her.