HaveHisCakeAndEatItToo
In American English, there is an idiom "Having your cake and eating it too". When given a slice of cake you can eat the cake now, or you can save it for later. Someone who wants to "have their cake and eat it too", is a person who wants things both ways in a situation where you can have one or the other.
It is a greedy way of playing Go in which a player makes an exchange and then decides tries to back out of his part of the bargain.
Rakshasa: Is this proverb normally used in go? The same topic of greed is covered in KyuDisease and/or overplay.
I've clarified the saying. It is not a Go proverb, but an English idiom. It is not an example of KyuDisease, though it is something that Kyu's do quite often. It may be considered an overplay, but overplay generally refers to a move, and the idiom generally refers to a sequence of moves.
Rich: Hi Thaddeus. The proverb's British English too, by the way :) Anyway, it's generally polite practice on SL to link to existing pages where possible. This prevents proliferation of pages - after all, having your cake and eating it isn't particularly Go-related. This is a courtesy to admins, who have to keep the place in some semblance of order :P
In this case, perhaps a link to GreedyGo or DonTBeGreedy would suffice. You can do this by putting the phrase you want to appear and the page you want to link to in square brackets, separated by the pipe symbol.