as usual, you clowns are all oversimplifying. the debt was taken on voluntarily, mostly because membership in the euro drove greece's borrowing costs down below market for greece's risk profile. greece took advantage of the cheap money, and when borrowing costs increased, they were in serious trouble. they have now been teetering on the edge of a death spiral where they could end up unable to service their debt, thus spiking interest rates, thus making it even harder to service their debt, thus spiking interest rates, etc.
other euro countries have been bailing greece out in various forms, mostly to avoid setting the precedent that moving to the euro is reversible (because, if not bailed out, greece would need to exit the euro, issue its own currency, then devalue it in order to pay off its debt, at least nominally). tacked on to each bailout were demands of specific reform milestones for greece to fix is structurally problematic public sector and welfare/disability programs, as well as sell off assets (like islands, art, etc.) to raise funds. greece did none of this, and then just to top it off, its voters elected a part into power that ran on reneging on the bailout terms.
incidentally, since the "bailouts" are really the IMF giving money to greece so greece can make its payment to the IMF for the last bailout (for example), none of this helps out greece's citizens. they need to exit the euro and default, take the pain, and hopefully be smarter next time.