Will Carling has branded England's humiliation by Wales the worst beating he has seen the team take in a quarter of a century.
The hosts thumped England 30-3 in Cardiff on Saturday to win the RBS 6 Nations title.
Former England captain Carling wrote in The Sun: "I have never seen a full-strength England side dismantled like this in the 25 years since I made my own international debut.
"This was a good old-fashioned drubbing.
"And it was harder to take because no one could possibly have seen it coming, not a defeat of such massive proportions.
"This was an England team that had won four out of four in the Six Nations after giving the All Blacks a good thrashing.
"It was painful to watch, and England have been taught some sobering lessons."
Carling claimed England had to improve in attack.
"The main lesson to take on board is that we have to stop going into games thinking defence is the overwhelming priority," he added.
"Of course, it is hugely important. But not at the expense of an attacking policy that allows us to make the most of the chances we create."
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.