Look what I have done
I usually have a bunch of tabs open in several terminal windows, and old stuff can stick around in there for fairly long periods of time.
This is from a python interpreter that's been running since mid-October:
>>> unicodedata.name(u"?")
'SNOWMAN'
>>> print u"\N{HEAVY BLACK HEART}"
?
You can't prove that it wasn't a productive thing to do at the time, can you?