A steam whistle is an electric move in bed it’s when your partner take a hit of a joint or cigarette while the other blows into there asshole or vagina your partner then exhales the smoke while the blower yells choo choo here comes the choo choo train
When your partner lights a cigarette and sticks the filter in their butt hole. The one with the cigarette in their butt hole squeezes, their butt cheeks to inhale smoke in their ass. The person that inserted the cigarette now places his lips around the other ones butt hole Then the other one releases a fart into his mouth he inhales it and blows it out, making a whistling sound.
I only have onecigarette to share after the party last night time to open that butt hole and give me a hot whistle