Paintball is a safe way to quickly jettison buckets of unwanted paint into other people's washing machines. Today's Groupon makes anyone an artistic paint disposer for $25 with an all-day paintball package (a $55.50 value) at Giant Paintball. This deal covers entry fee and the rental of a semi-automatic shooter, full face mask, ammo belt, loader, and 200 paintballs at Giant's giant fields in Alpine and Lakeside. If you want more paintballs, $16.50 fetches 400 rounds extra, which, when combined with your initial 200, adds up to roughly five hours of duck-and-dodge strategizing (unless your trigger finger is exceptionally itchy). Unlimited air for the day can be purchased for $10.

Giant Paintball's 25-acre Alpine location has been reconstructed with 12 new playing fields. Shoot from turrets in the castle field, challenge the sheriff to a showdown in the cowboy ghost town, hide among the rubble of society in a bombed out city, contemplate the delicate beauty of an orchid in the jungle field, or wrestle inflatable bunkers on the turf field. Lakeside specializes in close-quarters-combat zones and lush fields. Giant's paintball parks were designed by the creators of the world-famous SC Village and Hollywood Sports Park, making play there comfortably challenging and sweetly coordinated.