Happy Birthday to You

 is an unmarked Fallout 3 quest.

Walkthrough
Once given clearance to enter Little Lamplight by Mayor MacCready, the gate opens to display several child NPC's gathered around a teenaged NPC wearing a red birthday hat.

Sticky has just turned 16, and it's time for him to leave Little Lamplight. When you speak to him he tells you he wants to go to Big Town, where all the grownups go.

Once Sticky joins your party, you may give him weapons and/or armor (even power armor) which he will then use to defend himself.

During the trip, Sticky talks quite a bit, sometimes making up stories presumably chosen at random. His stories follow a Mad-Lib template; similar stories repeat, with only about half the words changed. You can choose to put up with it, you can tell him to shut up, or you can kill him with impunity (no Karma loss).

This quest is completed once crossing the bridge to enter Big Town.

Bugs

 * Leading Sticky across the highway between Vault 101 and Big Town sometimes causes him to turn around and run away without warning. He will run down to ground level and across the wastes, following the highway for a while before disappearing.