TFF: "We're all still young and happenin'!! See me climbing the mountain? ('Why am I climbing the mountain?')
I thought the movie had a bit more nuance than that, sure it was somewhat about Shatner flattering himself but around the same scene it also had McCoy annoyed, rightly, that Kirk was being reckless and Kirk acknowledging that death was possible, that he even knew it could happen in some way, although he insisted it couldn't happen with Spock and McCoy around.