it's kinda like a real life memento, but not really, except sorta.

Might I suggest getting a tattoo on on your dumb ass?

From abcnews.go.com:

"She said Ingram had a similar amnesia incident in the mid-1990s. However, there's no indication as to what caused him to suddenly forget everything a few weeks ago."

Like maybe, "My name is Jeffrey Ingram. If found please call (contact number)?"