KneeTheCap: I'm rather sad to inform you that the described action is not possible in Duke 3D. But there might be a mod for it, though :)
I really don't want it, I was just bringing up the fact that this is done in DNF. However, you made me curious and I googled for such a mod. I didn't find one, but I did find out that Google will substitute synonyms (my search contained 'poop' and I had results with crap and shit highlighted). Interesting.
SladeStrife: well if your talking bout duke nukem forever it technically wasent your own poop you where flinging. you just kinda wandered up on a toilet and it was already there >.>
Yeah, I haven't played it (or any of them). Thanks for the clarification.