It's not the size of the act-chest, it's the motion of her track record. These gals prove that getting there is better than the destination. So, let's let off a little steam.
Barbara Hershey in Boxcar Bertha (1972) is sweeter than a chocolate kiss and anyone riding the rails could do worse than to score with her. Nice tits, too. If the train is rocking, then don't come knocking, but do watch Brigitte Lahaie in Joy et Joan (1985) as she makes it with another naked lady. Amelia Jackson-Gray in Snakes on a Train (2006), more like boobs on a train, but then the guy is probably about to insert his snake, so we're okay with the title. Lena Headey in Waterland (1992) is eager for a fuck on the train, and you'll be happy to watch her bouncing balls take you to the Climax Station. Boobs from Elizabeth McGovern in Women & Men: Stories of Seduction (1990). It's a good story, which demands repeated readings. This train is bound for boobies with Jennifer Ehle in The Camomile Lawn (1992). One guy watches while another fondles and sucks on Brigitte Fossey's boob in Going Places (1974). Yeah, we're going places, obscene places. The subway isn't usually thought of as the sexiest place to make it in NYC, but with Janet Julian in King of New York (1990), it's an express to Sexyville. Glenda Jackson in The Music Lovers (1971) is also a tit-lover, which she shows to our satisfaction and adds some bush for a rocking ride. A bit of tit from Taryn Power in Tracks (1976).
That'll get your ticket punched.