I learned that invitations come in sort of squarish envelopes, while court summons come in a more legal-sized rectangular shape and occasionally reek of brimstone.
Oh, and that it's not a good idea to leap up and Mario-punch those particle-fibre things people tile the roofs of schools with. They're delicate. :x
I also learned that according to the Firefox Canadian Dictionary, "learned" is not a word. It suggests "leaned," "earned," "yearned," "l earned," and from that point things sort of dissolve past coherency.