Buddy boost 

A quick-recharge, high-alpine energy shot delivered by slamming a mouthful of your bro's protein-rich load. Comes in various flavors depending on what's served at base camp.

I was really struggling up the last few hundred vertical feet of that summit. Luckily my friend loaded me up with a buddy boost; it gave me the protein I needed for the final push!

Buddy boost by HunterCurtisJake September 8, 2010

Boost buddy 

Two people with the common goal of cheaply acquiring Multi-player Achievements over XBox Live.

Acerbus KILLZ & Dollarbill04 are great Boost buddy's.

Boost buddy by Jim Dyke January 10, 2009

Booster Buddy 

When an average or ugly person befriends an attractive popular person for the sole purpose of making themselves look and feel attractive. In some cases, the person may even start to think he/she themselves look attractive when in reality, they're not. An attractive person may use this as an advantage as well to make themselves look better by befriending a lesser attractive person, so they don't come off as shallow.

"Hey, Maegan's at it again. She always follows Lily around."

"G'yeah, she's definitely Lily's Booster Buddy."

"Oh god, look at her fat thighs, she shouldn't wear shorts."

Booster Buddy by CheapCharlie December 20, 2011