Romantic and/or sexual relationship between Noel Gallagher and Liam Gallagher of Oasis.
It is mentioned in Oasis Slash, some kind of fanfiction.
Gallaghers brothers take the term "brotherly love" to new heights, inventing special meanings of this phrase.

"I wanna Gallaghercest!"
"No. Maybe after my serial."
"But I want it now! Oh, come on!"
"No! I haven't got much time!! So many e-mails and news..."
"PLEEEEEAAAASEEE!!!!"
"Ok... Liam. Shut up and roll over."
by Firefox Sally April 26, 2009
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The romantic relationship between brothers Liam and Noel
Nova has been reading gallaghercest fanfics all week, there is something wrong with her!
by oasis freak March 14, 2021
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