I suppose it depends on what you consider normal... Some animals consider it normal to eat nothing but leaves...and other animals. But for a person that'd be rather...off...

[He began cautiously working his way around the room, gently lifting up things and setting them down in order to search for this special key.]

I hope he's also the non-hitting type...

[Still, he thought it was best to keep his guard up, quickly looking over his shoulder every now and then in the off chance he...sees...the invisable man...yeah...]

Why do you think this transparent trickster would do such a thing? Have you angered anyone recently?

[He gave Alice an accusing stare, lifting up a paper cup, turning it over, and setting it back down.]