![Krister Johnson on Twitter: "John P Navin Jr. only has 13 credits on IMDB but he played Cousin Dale in National Lampoon's Vacation and uttered the first line of the first episode Krister Johnson on Twitter: "John P Navin Jr. only has 13 credits on IMDB but he played Cousin Dale in National Lampoon's Vacation and uttered the first line of the first episode](https://pbs.twimg.com/media/EAyLbg8VUAAspPc.jpg)
Krister Johnson on Twitter: "John P Navin Jr. only has 13 credits on IMDB but he played Cousin Dale in National Lampoon's Vacation and uttered the first line of the first episode
RetroNewsNow on Twitter: "Before appearing in 'National Lampoon's Vacation' in 1983, John P. Navin Jr. was the very first patron in the 1982 pilot episode of the NBC series, 'Cheers' https://t.co/LEZK7hxCUx" /
![Krister Johnson on Twitter: "John P Navin Jr. only has 13 credits on IMDB but he played Cousin Dale in National Lampoon's Vacation and uttered the first line of the first episode Krister Johnson on Twitter: "John P Navin Jr. only has 13 credits on IMDB but he played Cousin Dale in National Lampoon's Vacation and uttered the first line of the first episode](https://pbs.twimg.com/media/EAyLbg7UEAAGv8R.jpg)