Begging tramp

Bob is walking home when he sees a tramp begging for change. Feeling a bit sorry for the man he gives him some change and begins to walk off.

"Thank you," says the homeless man, "It used to be so good for me but look at me now."

"What do you mean?" asked Bob.

The tramp replied, "I was a multi-millionaire, I had bank accounts all across the world with millions in. I had investments, bonds, stocks, shares and all sorts."

"What happened, where did it go wrong?"

The tramp sighed, ...

Spoiler:

....."forgot my mothers maiden name didn't I?"