Her boobs were shaking and dancing beneath her top and he could clearly see them.  Her bottom looked fabulous in a pair of tight jeans.  He found her irresistible.  He leaned forwards and went to kiss her on her pouting, red lips.  As they touched, she pushed him gently away.

  “Why don’t you slip off these,” she suggested, tugging his tee shirt off and unbuttoning his jeans. 

John showed no sign of resistance and quickly stripped off all his clothes.  He was panting and gasping in readiness to seduce her. 

“Wait there,” she told him.  “I have a surprise for you.”

As John waited, his expectations grew higher and higher and his cock grew longer and longer.  Caroline appeared a couple of minutes later and handed him a dog collar.

“Here,” she said, “put this on.  It really turns me on.”

With the thought of sex in his head, John wasn’t about to argue with his adorable sister-in-law.  He strapped the thick, leather collar around his neck and lunged towards her.

“Not so fast, tiger,” she said.  “How about a little foreplay?”
Although John would have rather ripped off all her clothes and dived straight in, he wasn’t about to upset her and jeopardise his prize. 

“I love to play dominatrix and slave.  Don’t you?” she asked, uncoiling a snake whip.

As far as John was concerned, he would play any game she chose to, as long as he got to screw her afterwards. 

“Down on your knees,” she commanded him.