The venom from the hoop snake bite that Seth got on his chin apparently caused Seth to forget significant portions of his road trip. Namely, that he and Adam were only two of the crew that consisted of the following:

* James Juneau
* Dave "Manny" Mitchell (a.k.a. Mancub)
* Shannon
* Travis Burk
* Scott "Switchie" Garlington
* John Weiss
* Cary "Carjack" Jackson

It was also Travis’s birthday on Sunday the 13th. Learning that the man was born on Friday the 13th explains a lot.