Funny - I was just reading about the creator of Ethernet this morning (Robert Metcalfe):
In 1995, Metcalfe argued that the Internet would suffer a "catastrophic collapse" in the following year; he promised to eat his words if it did not. During his keynote speech at the sixth International World Wide Web Conference in 1997, he took a printed copy of his column that predicted the collapse, put it in a blender with some liquid and then consumed the pulpy mass.[26][27] He had suggested having his words printed on a very large cake, but the audience would not accept this form of "eating his words."[28]