1. To not push against prevailing behavior/norms/attitudes, occassionally including bowing to peer pressure.
2. To not attempt to exert a large amount of influence on the course of events, whether a specific series of events or events in general. A person who does this is often referred to as "laidback" or "easygoing".
Past tense: "went with the flow"
1. Josh didn't care for that roller coaster, but everyone else liked all the loops, so he decided to go with the flow.
2. Mike really wanted to askJane on a date, but the timing was off, so he went with the flow.
An absolutely foolproof way to keep minors from viewing content deemed "too mature" for them to watch.
Billy: "So I was trying to watch some videos for an M rated game, and I ran into an age gate, so I put in my real birthday. SOMEHOW it managed to figure out that I am 12. CURSE YOU AGE GATE!!!"
Bill: "Fucking age gate! *quick scroll* THERE! I was born on January 1, 1904. Fuck you age gate."