Maybe Next Time Buddy is a Halo 3 Multiplayer achievement. It is awarded for boarding the same vehicle you've been thrown off of within ten seconds in any free for all playlist. The achievement awards the player 5 Gamerpoints.
It is represented by a red octagon with a hand making a "stop" sign.
This achievement's icon is identical to the emblem entitled "Halt."
A way to do this with the Banshee is to do an upwards barrel roll as you are being boarded. If timed right, you will be flipped upward as soon as you are ejected, and you can come right back down on the Banshee to reboard it.
The vehicle must still have the hijacker in it; if you kill them and then board the vehicle, the achievement does not count.
Another way to unlock this achievement is to get the ghost on snowbound and drive it into the underground section where the shotgun is. Simply wait for someone to get up to the ghost and hijack it, and since there is not much room for the hijacker to move, you can very easily hijack the ghost back without the enemy getting away.
If you are in a large vicinity when you are hijacked (eg. High ground, Isolation), shoot an over-charged plasma pistol shot at the ghost, as this will "pistol whip" the vehicle and stun it for 3-5 seconds. However trying the method above is an easier way to unlock this achievement, since the enemy will most likely have left the vehicle before you can re-board it.
The match does not have to be ranked, so it's possible to get a friend, go to Rumble Pit, and get the achievment there.
This achievement can be pretty hard for some, since a lot of people don't like to use vehicles in free for all, as you being the one that draws all the attention. This led people to gather at the start of the match and exchange vehicles, before resuming the fight again.
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