![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)
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
![Ron Wilson on Twitter: "Nice cast picture. Where is John P. Navin, Jr today? #johnpnavinjr #jenniferslepthere #nationallampoonvacation https://t.co/HlDK9gWCIt" / Twitter Ron Wilson on Twitter: "Nice cast picture. Where is John P. Navin, Jr today? #johnpnavinjr #jenniferslepthere #nationallampoonvacation https://t.co/HlDK9gWCIt" / Twitter](https://pbs.twimg.com/profile_images/2790148863/31678a50c0bc8875e488fc8bde38e563_400x400.png)
Ron Wilson on Twitter: "Nice cast picture. Where is John P. Navin, Jr today? #johnpnavinjr #jenniferslepthere #nationallampoonvacation https://t.co/HlDK9gWCIt" / Twitter
![JENNIFER SLEPT HERE, from left: Glenn Scarpelli, Ann Jillian, John P. Navin Jr., 1983-84. Columbia P JENNIFER SLEPT HERE, from left: Glenn Scarpelli, Ann Jillian, John P. Navin Jr., 1983-84. Columbia P](https://www.imago-images.com/bild/st/0099424632/m.jpg)
JENNIFER SLEPT HERE, from left: Glenn Scarpelli, Ann Jillian, John P. Navin Jr., 1983-84. Columbia P
![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)