Lani saw what was going on and wasn't about to miss out on all the hot MAN-MILK action. (The best part is how Lani's delicately squeezing with her thumb and forefinger. Hahaha).
Even Grant was there (suckling Josh's teat, no less)! This might not seem like a big deal to you, but that's because you don't know that Grant HATES going out to sweaty, smoky clubs late at night. In fact, the only time "Party Grant" ever makes an appearance is when there's a specific piece of ass he's trying to woo.