I remember those kind of responses, i used to parrot them myself:
MOTHERS DAY - We treat out mothers nice every day
FATHERS DAY - We treat out fathers nice every day
CHRISTMAS - [cue boring JW explanation of it's origin] then we have random surprise days which mean more.
In reality:
MOTHERS DAY - never treated my mother any better than any other religion did any day of the week.
FATHERS DAY - as above
CHRISTMAS - i remember having 2 (count em,) TWO "surprise days" in the 31 years i was a Jdub. Not that im bitter or anything but we used to claim we had these special days all the time.
Basically, anything involving joy and laughter is not allowed in this religion.