Not sure if there's already a game like this, but i'm starting this up anyway XD

The game is called Chain Reaction. You post a two-word post, and the next poster has to use the second word as their first word.
I sincerely suck at explaining stuff so here's an example:

Poster 1: Base Ball
Poster 2: Ball Hog
Poster 3: Hog Warts

I'll start us off!

Key Board

Sign Ups

”Dance with the waves, move with the sea, let the rhythm of the water set your soul free.”
-Christy Ann Martine

Up Grade

Grade A

A Plus

Plus Sign

Sign Language 

Language Class

Class room

Room Service

Service Dog

Pound Sand

Sand Castle

Castle Doctrine

Doctrin[al] Belief

Belief System

System Process

Process Server

Server Station

Station Wagon