You fucking shrunk the image! Of course it doesn't look large! 
For reference, this is a large spider, fairly common around Sydney:
What you posted is fairly small.
You need to find one of these spiders, put it in pizzaplanet's room and film the hilarious consequences of him finding it.
I expect a shrill scream, lots of pacing around and hand wringing followed by some drastic and irrational action.
For extra effect, hide the vacuum cleaner, cooking utensils and pots and pans. Try to make sure its on a surface that is not hard and smooth. On a curtain or with a couple of legs safely tucked into a large crack or hole. Make hissing noises from behind the door. Spiders like that hiss, right? Or squeal? They squealed in that film Arachnophobia. Make squealing noises; he won't know any more than I do.
Why didn't you just pulverise it with a shoe or other blunt object the first time you saw it?
Because it is one of God's creatures. Its outside wrestling a squirrel now.