like fantastic but much cooler with much more emphasis. it must be pronounced with emphasis too. it is most commonly used in, but not limited to, the discussion of lady parts and/or lesbians.
The vicar of Dibley, Geraldine, said to Alice that shagging model Rachel Hunter would be 'fannytastic'.
by me old fruity November 06, 2006
by Oo Oo Oomonkeys June 12, 2004
by callum partay February 10, 2004
by its_groot February 18, 2009