Jane's Addiction star Dave Navarro has revealed that he used to spray his blood on Marilyn Manson's bathroom mirror.
Navarro told Q magazine that he found the prank hilarious, but Manson used to be left perhaps understandably disgusted.
“I don’t know if this is funny, but when I was using intravenous drugs, I used to go in his bathroom and spray his mirror with blood from my syringe,” he said.
“It freaked him out. He would get his assistant to put on rubber gloves and clean it up.”
He added: “Right after, I’d go and do it again just to push him. I thought it was funny to be able to freak out Marilyn Manson.”
Jane's Addiction are among the performers at this weekend's Reading and Leeds festivals. For more details, check out the Gigwise Festival Guide.
Marilyn Manson - live photos
You can keep up to date with all the latest news from Gigwise by following us on Twitter and liking us on Facebook.

Elton John hospitalised with 'serious repiratory infection'
Lady Gaga 'won't change shows' after protests
Rihanna performs new single on American Idol - watch
Bruce Springsteen debuts 'Rocky Ground' video - watch
Facebook Bans Jane's Addiction Album Cover 'Nothing's Shocking'
Jane's Addiction Postpone The Release Of New Album 'The Great Escape Artist'
Tuesday 30/08/11 Jane's Addiction @ KOKO, London
The hottest WAGs of rock and roll
The Enemy take 'Streets In The Sky' to Manchester
Who's tatt is that? Guess the rockstar from their body work