The Gallagher brothers are known to enjoy a good old scrap, but Noel needs to pick his fights a bit more carefully.
When he decided to take the mickey out of ageing Grease star Jeff Conaway - aka Kenickie - the Oasis rocker had a knife pulled on him!
It all kicked off backstage at a Marilyn Manson concert in LA.
Noel and Liam were knocking back absinthe when they were interrupted by Jeff, waving his walking stick.
They should have sussed he was trouble - Jeff, 57, appeared raging in a wheelchair on US TV show Celebrity Rehab, battling addictions to cocaine and alcohol.
Instead they scoffed.
Noel tells Russell Brand's Radio 2 show: "Kenickie shouted, 'I've had four back operations, you know.' "So I said, 'So get yourself out of that wheelchair then!' "He said, 'I've had four operations but I can still pull a knife on you.' And he pulled out a big blade.
We thought: 'You're going down, Kenickie.'"
Faster than Greased Lightnin'!
Source: www.mirror.co.uk