Weird and Exotic Fruit

It has come to my attention of late, that weird and exotic fruit - or sometimes vegetables - keep appearing in the lunchroom at work.  I'll amble down there, armed with tuna sandwiches and a book and there they are.  Various weird and exotic fruit, just sat in the middle of the table.  Sometimes in bags.  Sometimes on plates.  Sometimes just sat idly in the middle of the table.  Where does this fruit come from?  Is there some hidden tree of magic and wonder that lives in the tea room?  Is there a goblin - no I don't know why it would be a goblin -  that leaves mysterious fruit, watching to see who will take one.  Does the table itself have fruit generating properties.  Or could it be the more likely case that someone is growing fruit, has excess fruit and brings the fruit into work to share with their colleagues.  This, I believe, is a more logical explanation.  It still doesn't explain what the fruit actually is.  There are these weird green things that look like a cross between an apple, a pepper and possibly a starfruit suffering from an allergic reaction to peanuts.  I've been told what this fruit is called on a number of occasions but still I forget the name.  It's been likened to a watery squash so I've never felt that inclined to try one.  They look pretty funky though.  The other ones that I saw today looked like maybe a plum, crossed with a tomato, crossed with an angry potato.  Scratch the last one.  Apparently these are like passion fruit but with a tangy taste.  Popular in the fifties so I'm told.  I got distracted by my tuna sandwiches and forgot about the weird and exotic fruit.  Perhaps I'll snaffle one tomorrow and give it a try.  If I can just establish what these weird fruits are called I can confirm whether they get the Little Stalky seal of approval.  We'll see.