An image this large should be behind a cut I believe.
1) I actually DO think this was an accident, the penciller would have drawn a clearer version of this and the inker and colourist didn't think it through
2) Kurt would be more impressively hung than that (well, in my fantasies)
3) I suppose if nothing else, it does add to the theory of a connection between the size of a man's feet and his... well, one of the other extremities...