Lad at our work, 30, has a wash at work to save on his water meter at home. He washes his face here, has a shave a couple of times a week, brushes his teeth etc.
Also eats either soup (the tins of which he washes out and takes somewhere to get 2p back per tin) or reduced meat that he's had frozen for ages.
Fond of eating stuff well out of date if its free too. Had an old pie that no-one wanted, was two months out of date, he creamated it on the grill, ate it, and was promptly off work for the next week with food poisioning.
Also ate a pizza that was a couple of months out of date, no ill effects from this though unfortunately.
Will eat food he hates, if its free and will fill him up.