We are a family of odd and varied talents.  Even now, Sister and Aunt R. are practicing a musical gargling duet for Thanksgiving.  Invented by Aunt R. at a young age, musical gargling is exactly what the name implies - get a mouthful of water and gargle the song of your choice.  I had never seen this feat performed by anyone else until Sister, of her own accord, invented it as well.  Is this some sort of strange trait that exists only within my family’s gene pool?