He doesn't have a third leg. He has bent legs under baggy pants. The pants are baggy enough that they don't take on the shape of his legs.

Sheesh! So, by Cracked's logic, the woman in the dress must have another leg as well with no extra foot, simply because her dress isn't glued directly to her leg.

I'm reminded of a classmate that drew a female model's face from the side with her hair resting on her shoulder. The teacher kept joking, saying "hey, she's got a beard!" Anyone that has been an artist long enough can appreciate the fact that at times... some elements to the overall compositions that we choose can hit our audience's eyes in strange and partially incomprehensible ways -- and to others; they totally comprehend what's going on & it's no problem at all.