John Holmes Motherfucker I love how it eventually turns into "Captain Jack", a song which may be about masturbation, but which is certainly terrible.
Mr. Purple Cat Esq. Ive only ever heard that song in this context, but are you sure it a metaphor? I think its literal and its about getting drugs from a pirate.
Jet Bin Fever Terrible? I disagree good sir. And the song isn't about masturbation, it's about being bored and getting high.