When one Weasley (from the Harry Potter series of books) gets atop another Weasley. This is a Weasley sandwich. They can contain any Weasley, but more commonly have a combination of the teenage sons. Most, but not all, Weasley sandwiches lead from one thing unto another.
Fred and George love each other more than you would expect, and often make Weasley sandwiches when the rest of their family is shopping at Diagon Alley.
by Kat Millard =^.^= April 13, 2006