"Popeye falls under the influence of the laced berries and becomes surly and mean, striking out at his friends and allies. Yet he still manages to get five gallons of "myrtholene," a joy-inducing drug which he pours over the plant's roots. The new berries produce delirious happiness, and as Popeye says, "When a man's happy he jus' couldn't do nothin' wrong.""
Algolagnia is the paraphilia of deriving sexual pleasure from pain. Note that algolagnia is not the same thing as masochism, since there are fewer psychological connotations to algolagnia, which may be a simple liking for pain, without any need for domination, submission or humiliation.