David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss. ...

You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss. (David Letterman)

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David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss.

David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss.

David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss.

David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss.

David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss.

David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss.

David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss.

David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss.

David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss.

David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss.

David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss.

David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss.

David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss.

David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss.

David Letterman Quotes: You've got to be careful smoking weed. It causes memory loss. And also, it causes memory loss.