"What do you say?" John coaxes, and doesn't even let you get the first syllable out before his cock hits the back of your throat again.
You moan, sound all garbled around his cock and the drool and pre filling your mouth, big wet eyes blinking up at him from your knees.
"Come on, you can do it," and he fixes his grip on your head and forces you the rest of the way down, smashing your nose into his groin, throat a tight suffocating squeeze on his cock. "Three words, kiddo, I know you can."
And God help him, you really do try, throat bulging and vocal cords shoved aside for his cock and the cum he pumps into you, your face wet with tears as you choke on it. A little thrumming pulse against his cock that coaxes the last spurts of cum out as he pulls back, paints it on your tongue, the inside of your cheeks, as you gasp around the fat head of his cock.
He grins in satisfaction when you cough up a little more, slick bubbles of white cum and spit on your lips, staining your cheeks. Your eyes are dark and heavy with it all, he knows if he put a hand between your legs it'd come back soaked.
You spit a mess of frothy slick cum down your chin, drag your lips dripping over the length of his cock, and bury your face into his balls. He cradles the back of your head.
As you huff his balls, licking the damp skin, he sees you work your hand between your own thighs, slick wet sounds of drooling cunt to match your face.
"Say it," he reminds you, and you moan and shudder as you come.
"Happy Fathers Day, dad!"