Day Tripper (perk)

 is a perk in Fallout: New Vegas, granted after taking 25 addictive chems.

Effects
You've done enough chems to know how to hang on to the effects just a while longer.

Behind The Scenes
It is a reference to The Beatles' song of the same name.

May also be a reference to a person who visits a tourist destination or visitor attraction from his/her home and returns home on the same day.