Not funny to me, and the joke wears thin after the second time the MTF name gets changed. This reads like an excerpt from a longer tale, and I can't really support it.
EDIT: To say at least one positive thing about this in here:
"Now that the entirety of Mobile Task Force Lambda-2 ("Adults Acting Like Children") are here, I'm going to begin my little talk about wasting my valuable employees' time with stupid office pranks and juvenile games…"
This is the funniest line in there, and I did actually laugh at this.