Heavy tits pressed together as two women lock lips on a train seat, tongues twisting. One hand grips a full breast while the other slides up a skirt. Breaths come fast, moans muffled between mouths. Nipples stiffen under blouses, bodies rocking slightly with the train’s motion. The white-blouse woman’s fingers dig into the black-top’s thigh, pulling her closer. Wet sounds fill the tight space between them, no escape from the heat.