Stealthily

As she exited the venue where she had made her appearance, you silently got behind her and covered her mouth with your hand "Do not make a sound, I'm not here to hurt you, I am a pleasure demon."

"P-p-p-pleasure demon?" she asked.

"Yes my dear, I am here to give you pleasure."

Whlist you hold her close to you, you can feel her heartbeat quicken and her pulse race as she decides what to do.

"This is an example." You say as your erection grows to its full thirteen inches and nestles against her tight ass.

"Holy shit, I've never felt one that BIG before!"