Oh how I'd kill for readings like this 
I too have played with a meter
According to "standards" set...
as I mentioned in your other hypoglycemia post that fasting is considered normal anywhere from 64-110 (new trends are to see it less than 105 just as in pregnant women).
Most diabetes educators and endocrinologists ask you to simply test 2 hours AFTER the FIRST BITE of food you take, regardless of how long it takes you to eat your meal. Of course, you can see how this will vary a lot of results--if you inhale your food or savor slowly.
But, and this depends on the meter you have, which should include "normal ranges" for that particular brand...
usually, ONE HOUR after your first bite of food, you should go no higher than 160.
TWO HOURS after it should be 120 or below.
THis will also vary with what you eat. If you eat a handful of nuts or an egg, it won't move much. Try toast and jam and you'll see it jump a bit more. Of course, DH can inhale that stuff and barley have his glucose move, lucky guy.
Your drop doesn't suggest anything odd to me, but if your body is starting to put out more insulin because your cells are becoming resistant to it, you may have never encountered this and it is simply a new feeling for you.
Play with it over the course of a few weeks and several different meals. Keep a diary of what you ate and amount of time that elapsed after eating that you tested...the actual time you test makes little difference except you want a morning fasting reading.
Does this help?
Good Luck 
Editing to say, what meter do you have?? Is it giving you venous or plasma results
Thoreau said, 'A man is rich in proportion to the things he can leave alone.'