He gets a better feel for her breasts

Jack plopped down on her couch. “That's hot stuff, Grace! Now let's see you without that stupid t-shirt in the way.”

The mousy girl pulled her shirt over her head, then readjusted her black rimmed glasses. Her bra was pretty boring, but the breasts inside were very inviting.

“Lose the bra, too. And relax! Enjoy this, babe! It's your lucky day!”

The tension went out of Grace's shoulders. She smiled and pulled off her plain white bra to reveal a very nice set of c-cup jugs with pale nipples.

Jack slouched back on the couch and smiled wide. “Sweet! You're looking good today, little nerd-girl! Come here and get those tits in my face!”

Grace happily climbed onto his lap and pushed her breasts against his lips. Jack grabbed a tit in each hand and caressed them as he licked her small nipples. He wagged his tongue over the nips, then sucked one into his mouth. He lowered a hand to her waist and slipped it under the waistband of her skirt and panties. He gripped her ass hard and pulled her up higher, shoving her breasts into his face harder.

After a few minutes of playing with her ass and breasts, he pulled back and said, “All right, you know where this is going next.”