Well it was only a matter of time, but today it has happened as reported by ZeroHedge.

it is only fitting that US debt, net of all settlements for all already completed bond auctions, is now at precisely $15,182,756,264,288.80. Why is this relevant? Because the latest annualized US GDP, according to the BEA, was $15,180,900,000.00. Which means that, as of today, total US debt to GDP is 100.012%. Congratulations America: you are now in the triple digit “debt to GDP” club!

(naturally, this is using purely “on the books” data. If one adds the NPV of all US liabilities, and adjusts GDP for such things as today’s housing contraction, then the magical triple digit threshold was breached long, long ago).