It was when Christopher Pike was dying and Spock, instead of trying to comfort him or help him, decided to use that opportunity to conduct a mind meld on Pike simply to feel what Pike was feeling as he was dying. That was a really tasteless and cold thing for Spock to do! Now if he had done a mind meld to ease Pike's fear and pain so he didn't have to suffer while dying, that would've been fine! But nope, Spock didn't even do that for Pike.
Wtf Spock? Not cool man!
Wtf Spock? Not cool man!