IME students turn cheekiness into an art form.
When you come home, bring all your washing.
Put the heating on to subtropical and wear only shorts (don't even bother with a T shirt) in February.
Make sure your parents pay full subscriptions to Spotify, Amazon prime and Netflix so that you can share them.
If your parents are eating out, say "great where are we going"
Invite your mates over to drink all the wine and spirits. Ask, in advance, if you can add a few pizzas and snacks to the shopping delivery so you don't have to order domino's for the friends.
Help yourself to as much food, toiletries and toilet rolls as you can carry to take back with you.
Borrow your DMs nice new versace handbag or your Dad's good watch (for a few months).
Ask for a lift back, so that you don't have to pay trainfare and so that you can carry more contraband. It's only 200 miles. Pretend you want to talk to them on the way (you can put your earphones in as soon as the engine starts).
It's a good job I love them.