Bruce Willis was 40 in Beavis and Butt-Head Do America when he played the character 'Muddy (voice)'.
That was over 27 years ago in 1996.
Today he is 69, and has starred in 152 movies in total, 115 of those since Beavis and Butt-Head Do America was released.
In Beavis and Butt-Head Do America, I think Bruce Willis looks: