He knew just the right pressure to use, just the right speed. His tongue seemed to buzz and throb against her highly sensitive clit as he rimmed it. Monica's pretty features twisted into a grimace of lust, and she closed her eyes tightly, overcome with ecstasy. She felt the pleasure building in her pussy till it neared the point of explosion.

"Unnnhhhh, God, I have to come," she sobbed.

Mark took pity on her. He caught her wildly throbbing clit between his lips and sucked her off. It was expertly done, and it only took seconds. Monica was stunned at how fast he could do it to her. A few hot, firm sucks and she was in orbit. A huge orgasm burst from her clit and flamed out to engulf her whole body, making her convulse and writhe.

"Ahhhhhh, honey, you did it, I'm coming!" she wailed.

She was writhing so hard, he had to let her go. He lowered her legs from his shoulders and let her roll around on the big bed as the powerful orgasmic spasms shook her body. Monica had never come so hard in her life. It was almost a full minute before her spasms ended, and she lay there gasping for breath. This sure beat anything she could do for herself by masturbating.

She glanced over at Mark and saw him kneeling there, watching her. His prick was so stiff, it hugged his belly, and it was leaking a thick river of cream. He'd hardly even allowed her to touch it before, but now she was determined to do some exploring. She rolled to her hands and knees and crawled over to him, her eyes locked hotly on his drooling blue-veined prick.

"And just what do you have in mind, young lady?" he grinned.

"You'll find out," she growled.

She crouched right in front of him, stuck out her tongue, and began licking his cock. It was the first time she'd ever gone down on a guy, but it came to her naturally. Everything about Mark turned her on, so naturally she wanted to lick and taste his cock. She started gobbling up his salty juices and discovered that she really got off on the taste.