Diplomatic storm

Im my absence DS#2 has continued to work on his bit of the house to prepare it for the arrival of his (ten) mates. This work has included moving some furniture around.
In  response to a cheery Whatsapp from DS#2 saying "Ok I have borrowed some bits from your old room" , the response came back from DS#1 within the hour "Some bits., seems like my room has been savagely pillaged. Anything actually left in it? I do still have to have some sort of a room when I come home..."
Fraternal love.