This version of Wade Wilson popped up at the beginning of the movie as one of the the members of William Stryker’s mutant strike team, and true to form, he was quite the wisecracker, much to the annoyance of his fellow operatives.
During a lengthy GQ interview, Ryan Reynolds explained how in addition to playing Wade Wilson in X-Men Origins: Wolverine, he also wrote the character’s dialogue because of interference from the 2007-2008 Writers Strike.
It was the closest the movie came to giving fans a proper Deadpool, and given Reynolds’ penchant for comedy, it’s fitting that he was the one who penned those lines.