Mark stands there in shock, his hand dropping to his side as he watch his mother stare at him and his king-sized erection.

"My God!!! Don't tell me that you are ready to go again? After what we have just done?" She asks, her eyes never leaving his ardent shaft as he feels its pulses get stronger and harder.

"I..am...sorry." He gasps. In his aroused state, he can see her standing in front of him - naked...