Back when my wife and I were students, we only had that tiny little oven with a 1" gap between the door and the seal. Enough to say that the thing just wouldn't heat much.
Another thing: when my wife is hungry, she has no patience at all, she get's nervous and just HAS to eat or she gets mad.
So one night I decide to make gratin dauphinois. I know it takes about 1hr to cook. We plan to eat at 7pm. But at 7pm, the potatoes are still uncooked. Back to the oven. 7:30pm, taste, not cooked. Back to the oven. 8pm, still not cooked. 8:30pm, still not cooked. At that point my wife was SO hungry she started to get really angry, and told me she'd rather eat it raw than wait any longer. I insist, it's almost there, I just feel like it still needs another 15mn... so I convinced her to wait. 9pm, open the oven, insert knife into potato: it's ready! So I take my oven mitts, grab the dish, and .... lose my balance, flip the whole dish upside down while taking it out of the oven, and the entire contents of the dish fall right into the trash that was next to the oven.
Well at least that was an easy clean up. You don't want to see the look on our faces.
I think that night I ran to the store, bought a big bag of cookies and called it the night.