You might ask volley about it. For the longest time she had the months listed on her fanfiction.net site, so she might know the origns of them all:
NOVEMBER: Drown Malcolm Month
JANUARY: Sir, We Have A Problem
APRIL: 'Tis But A Scratch
JULY: Messhall Midnight Munchies
OCTOBER: Wasn't It A Grand Explosion?
And for a short time she had one of my suggestions listed for August:
"Bug Trip Month"
(The Twitter player for Malcolm once manged to stick a reference to both "Drown Malcolm Month" and "Wasn't it a Grand Explosion" in something Malcolm 'said' right at the start of November last year. Too funny.)
A while back volley had a poll for new ideas and now lists:
The current months she lists are:
MARCH: Timetravel Month
JUNE: Breaking Travis Month
SEPTEMBER: Malcolm Impossible Month
DECEMBER: What the Hell Happened to the Captain? Month
But I think Drown Malcolm Month is a veritable ENT fanfiction tradition now.
(I'd also suggest a "That? It'll Buff Out" Month.
)