1 definition by friendooooooo!
Used to describe the events of yesterday when you haven't gone to sleep and its past midnight and , your talking about yesterday even though you haven't gone to sleep yet so technically its all one day. invented by my friend and i one night at 12:01AM.He said remember yesterday when we went sailing.I argued that it was still part of today.so yonderday was born.
Jack: sailing was fun yesterday (clock reads 12:01AM)
Me: you mean yonderday , we haven't gone to bed yet.
Me: you mean yonderday , we haven't gone to bed yet.
by friendooooooo! July 15, 2011