Serge Ibaka has a lot of blocks. He nearly even has one in his name, as some people have noticed (at least phonetically). He also has two early on in Game 2 against the Grizzlies. The poor victim of this particular one was Ed Davis on a dunk attempt.
As if that wasn't embarrassing enough, Ibaka followed his denial with the famous Mutombo "No, no, no" finger wag.
And then he proceeded to slowly walk up the floor, clearly satisfied with himself, and who can blame him after a play like that?