I received an Easter Egg. When I clicked the (r) to send a /msg back to the sender (in this case, Silverai_me), the entire message about receiving an egg and how I'm cooler than an omelette was appended to the reply message. 

In my chatbox, it said something like this:

/msg silverai_me_you_just_received_an_easter_egg_which_means_you're_cooler_than_an_omelette

Thanks, and cheers!