Nothing like you and your posse having a ball!

Yesterday, Justin Bieber did just that as he rounded up his friends and a ton of girls to play some paintball at Hollywood Sports in the South L.A. town of Bellflower.

The pop star packed up the crew in his huge luxury liner for the excursion. In fitting fashion, everyone then headed back to his pad to continue the party.

The 20-year-old singer's been doing more than partying these days as he recently stepped in the ring with none other than Floyd Mayweather for a special one-on-one session.

Guess it pays to have world champion fighters as friends!