1-group of people, usually friends that hangout on the trolly system, subway, train, metro.
2-a passenger or group of people you see frequently in transit from one place to another.
The subway has different trolly squads depending on the time.
The local trolly squad are a bunch of assholes.

The school girls make their own trolly squad at the back of the cart.
The banker, cleaning lady and old man are the usual trolly squad.
by Lv5 Bread September 3, 2018
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