ballsap
(noun) Slang term for a man's seminal fluid, semen, or come.
It seemed like it had been a very long time since they had been alone with one another and as far as she was concerned it HAD been a long time, too long in fact. So when she felt the tell-tale signs his body was giving her, smooth-as-silk Shannon removed Nikki from between her lips and began to briskly massage his manhood, milking a massive amount of his ballsap from him that had been pent-up for her and overdue. Nikki moaned an orgasmic revelry as he erupted on and all over her bountiful breasts. Shannon smiled satisfied, his seed secure and subdued.