You offer to pull out

You promise Lindsay you'll pull out, and with a satisfied smile, Lindsay pulls you into
her and lets you fuck her.

...

The car squeaks all into the night, as you pound into Lindsay as her twin sister
watches on. "Mm, he's in you so deep" murmured Sally, touching and caressing
her sister's breasts and your chest. "I'm going to taste him right as he cums
and pulls out of you, sis."

"Mm fuck, fuck, fuck!" groans Lindsay, squeezing your cock in turn. "He's in so
deep! It feels so good!" Her hands reach up and caress her twin's breasts,
as spreads her legs further for you.

The sight is much too much to behold, and you find yourself reaching close to the
end. Remembering your promise, you pull out quick just as you begin to fire
off your load.

As your sperm flies through the air, landing onto Lindsay's perfectly trimmed bush,
a light shines into the car. "What's going on here?" asks a voice. It's a cop.