When you kill your enemy, you wanna look straight in his eyes so he knows that you're the one who beat him to death! It also gives you a chance to deal out some really zippy one-liners. Like, "I hope you brought your wallet, 'cause the rent in Hell gets paid in advance!"
Hey, Blue, how do you like them apples? And by apples, I mean bullets; in your face! [Sarge teabags Tucker repeatedly.] How do you like them pears? Guess what I mean by pears; deez nuuuuuuts.
Here, we have a run-down soldier, but today we'll show you that with a few simple modifications, you can make an attractive corpse. [Sarge shoots and kills Grif.] It's a good thing.