Visa Ground Hog Day

so.. at the visa place...
 I get my visa (25$) and the lady gives me a wee print out thing and I am reading it while she is doing my payment and I notice it says valid until July 2013 so I am like... "hey!"
 and I say to the lady.. "HEY.... does this mean I don't need another visa until july 2013?"
 and she says "yes."
 and I say "so I am probably still covered from the last visa I had seeing as I went last Dec"
 and she says "yup."
And I am like.. "ummm"
and she is like.. "well, now you have the new one so it covers you now"
( e.g. I should have brought this up before as now I am already processed on the new one! GRRRRR)

and then I thought to myself, as I am sitting there in dumbfounded contemplation and comparing the travel agents to the tax department, I bet I didn't need to get the last one either seeing I would have already been covered from the one before.

GRRR bad people.
and so I think, well I am gonna put this piece of paper in my passport so next time I know I don't need to get one and this doesn't happen again.

So I open up my passport and there is a little piece of paper identical to the one I am putting in... so I am like GRRRR I did this exact thing last time!!!

So this time I think I need to put a sticky note on the outside of my passport that says DO NOT NEED TO GET VISA BEFORE JULY 2013!

grrrrr