Sometimes you should keep your mouth shut

As the title says sometimes you should keep your mouth shut, well tonight I asked my Dad if I could buy Sims 3 Pets and he said yes, so I was getting all excited and he was about to order it for £25 but then you had to create an account on the website and go through all these steps. So I said without thinking I could buy it tomorrow but I dunno if my Mum will let me and we'll be at the metro centre till 10pm and Friday I am sleeping round my friends and Saturday going shopping again! D: