For anyone who's interested I have just been informed that it is exactly 76 years ago today that the first twinkie was made.
The Twinkie was invented on April 6, 1930 by bakery manager James Dewar, making thrifty use of shortcake pans that were usually only used during the strawberry season. Twinkies originally contained a banana filling, but this was replaced with a vanilla filling during a banana shortage caused by the outbreak of World War II.
Various urban legends have stated that Twinkies have shelf lives anywhere from several years up to one century in duration, but there is no evidence to support this.