Based on your request, it seems you are referring to the adult-oriented doujin game Time-Stop Train ~Freeze Time and Play Naughty Pranks!

The chaos isn't loud. It’s quiet, personal, and deeply unsettling. They will spend the rest of the ride checking mirrors and questioning their own memory. Did I put this on this morning? Am I having a stroke?

Carefully remove the food from their hand. Then, position it so it is floating exactly one inch in front of their open mouth. You may need to use a piece of clear fishing line or simply freeze time in a staggered way (press the stop-watch, move the food, then freeze again at a micro-interval). For the true amateur, simply hold it there with your own hand—but remember, you will be visible when time restarts. So don’t. Use a strand of hair or a carefully balanced toothpick.

In Time-Stop Train , the interactions range from harmless gags to the "naughty" antics promised by the title. The player might rearrange a passenger's belongings, swap items between characters, or pose them in embarrassing positions. The thrill for the player often lies in the anticipation of the "unfreeze."

Now, work fast.

Swap everyone’s seats so they wake up next to a total stranger.