You're back!

River is overjoyed that her favorite human (the big human) is back from his morning run.  She immediately set to nose-bonking him, chinning his shoes, and giving his clothes a coating of bunny fluff to ensure that everybun knew whose human he was.

Simon immediately chinned the hay box as his "greeting", so I guess that means he isn't going to share.  The little guy knows that running works up an appetite!