Deliberate substitution for irony. Stems from a quote by Bart Simpson in the episode "Grift of the Magi". Rarely appears outside the phrase he uttered: "the ironing is delicious".
Bart: Lisa's in trouble. Ha! The ironing is delicious.
Lisa: The word is "irony".
Bart: Huh?
the term originated in a small group of mmorpg players when someone came up with the excuse of "i'm ironing" when everyone accused him of masturbating to pornography
A working arrangement where one interupts the domestic chores every 5 minutes to push the mouse a quarter inch, or glance at your inbox, hence giving the impression of doing some actual workwork.
Look at the mess in my house! It's agood job I'm ironing from home tomorrow so I can get tidied up.