That's part of the joke...

I was driving with a friend
I grab his leg instead of the gearstick
We both laugh and I unzip his pants
I park the car while fondling with his balls, my friend is laughing because he knows it's a joke and we're just friends
I start sucking his dick and was about to choke on it because I'm laughing so hard
My friend is also laughing his ass off, he starts making train noise while yelling "BROJOB BROJOB CHOO CHOO"
He then cums and then I swallow it all and kiss him while both laughing cuz we know it's a joke.
Gotta love making jokes with my friends bro.