You went to your chambers/room because you were very tired to do some crazy stuff, when you opened and you noticed it's open earlier you just locked the door but you ignored instead, you jumped on on your bed and you got some pillows all over you but you noticed something was moving UNDER your bed but you ignored it again and check later

It was 1:00 am at the morning, you remembered something that your gonna check under the bed, you checked your bed

Megatron: smiles at you "HELLO!"