It was good, but I actually liked the 1st more.
I'll admit the "what's a berd?" giggle face and mutter was a really funny spot, as was the Pythagorean bit. However, most of the movie lacked some of the style things I liked about the first one.
First off all, "peanut butter and jelly sandwich," as an exclamatory phrase, is considerably less funny and overall lamer than "cabbage patch kids."
The antagonists in this one weren't very funny, unlike the first one, and the beginning parts just weren't nearly as memorable as "hate you so much it's unreal" and "major hard-on" and the like.
I dunno. Maybe I just liked the first too much. Hell, just the way he said "It's, uh, only part one though," and kept that happy open mouth look was funny to me. That was in the "bullet in liver" part, yeah, but in that context it makes sense, and coherency is less funny.
Back to the Future references are always nice, but I still miss Office Space music. :[
Visuals and audio were nice, as usual. One suggestion: use easing. You seem to use a lot of flat-lined tweens. Those never look as good.
Overall, it was good, but it's probably not something I'd send to my friends and quote, like the first one. :0 Hopefully we'll see what happens Tankmen 3.
P.S. Have you completely given up cock/gay jokes? Having one or two doesn't hurt.