be dressed in motley
be playing The Fool
still be The Fool
be watching / listening to / singing Pagliacci or Rigoletto
be trying to fool you
be perpetrating a Perl-ish prank (nominations invited)
be executing a non-programming prank
be wondering whether it's Iron Pyrites
be practicing to avoid Fool's Mate
be still together with my money (little though it is)
be trying to amuse you
be wondering why yyyy/4/1 is associated with foolishness
Still be writing scripts without "use strict;" and "use warnings;"