I can confirm that this is so true. At one place I worked I wasn't allowed to program in C, but did the C code reviews[1].

I was riding in a car with buddies who were much better C programmers than myself and making notes on some code I needed to do the review of the next morning. This is the code pattern that almost crashed our car:

  a = some_function(i);
  a1 = &a;
  a2 = &a1;
  calc(a2);

with calc() reversing it out

I was cussing a bit much[2] and front seat passenger had to look then driver got too curious. Sadly, this was the least "wrong" thing about the code. Its very hard to do a code review where you suggest 500 lines of C can be reduced to 50.

1) cannot have the guy doing code reviews actually coding, that would be improper

2) cussing in private allows positive, motivational tone in public