The last two lines of this msn conversation shows you what irony is.

kaisiang says:
WHAT A PICTURE TO PUT ON MSN
a handful of dust says:
WHATS WRONG WITH IT
a handful of dust says:
AND LOOK AT YOURS
kaisiang says:
MINE IS HAPPIFYING
a handful of dust says:
RUBBISH
a handful of dust says:
YOURS IS RUDE
kaisiang says:
RUDE!?
kaisiang says:
ARE YOU A RETARD