"Sweetie Belle! What were you doing inside the toaster?" "Don't you know that hiding inside kitchen appliances is dangerous?" "I'm sorry, dear - but I'm afraid I'll need to have a few words with Pinkie Pie about this before she gets to foal-sit you again."
...On a totally unrelated note: Look at my username.
Hm, yeah, that's true, timespace is pretty sensetive stuff... Well, if we had a Portal Gun, we could fire it into the toaster and just plant the other end where we can reach it, effectively solving the entire problem... Ultimately, we'll need to make a portal to Aperture Science Laboratories first, but... they're the ones with the portal technology in the first place, so... ugh. (...I really overthought this joke, didn't I?...)
That's... very true... Although a growth ray would also need to be created and shrunk as well to be used on the other side to regain original size. Otherwise someone might get crushed under a hoof, and that would not be good. At all. o_o