There’s a reference in The Anthem by Good Charlotte 
Pictures of Lily by The Who.
Mary Anne With the Shaky Hand. Also by The Who.
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Vibrator by Motorhead.
Yup - and “Orgasm Addict” as well. 
On his 1974 album “Men Opening Umbrellas Ahead” Vivian Stanshall had a track called “How The Zebra Got His Spots”, which was all about his penis and how much he liked playing with it:
Divinals I touch myself