On my knees, in front of him standing, penis and mouth level, his hands in my hair pulling my head ever so gently towards his throbbing member... engulfing it in its entirety. My hands on his ass pulling him deeper and my sucking action pulling every last drop of cum from his gigantic balls... (I might lose a drop or two of cum as it spills from my mouth..... hope that is OK with you..)
Is that good enough?