Lancelot was a high ranking official in King Arthur's court. However he had one long standing wish - to suck the Queen's voluptuous breasts to his mind's desire.
Every time he passed the Queen he would get frustrated. He revealed his desire to king's wizard Merlin one day, and begged him to do something about it.

Merlin, after much thought, agreed on the condition that Lancelot could suck the breasts to his desire but later he would have to pay Merlin 1,000 gold coins for it.

Lancelot agreed.

The next day Merlin prepared a high voltage itching lotion and poured it into the Queen's bra while she was taking a bath. Soon the itching started and grew in intensity much to the King's anxiety. Consultations with doctors and Merlin revealed that a special saliva, if applied for four hours, would cure it. Merlin also added that such a saliva was only in Lancelot's mouth.

Arthur summoned Lancelot and for the next 4 hours the knight violently sucked the Queen's breasts. Licking, biting, pressing, playing he got what he always desired.

Satisfied he returned back and met Merlin, but in his lust and since his mission was over he refused to pay the wizard anything and in fact he shooed him away.

Lancelot of course knew that Merlin could never report this matter to the king. But Lancelot had underestimated Merlin.

Next day Merlin duly put that lotion in King Arthur's underpants.

Lancelot was called promptly by the King again to do his duties.