A homosexual, based no doubt on the comparison between pushing a trolley and engaging in sodomy

one who is "brolic" is riding on the broli trolley

A sex act in which a man attaches a strap-on to his backside, facing rearward. Two women then situate themselves in front of and behind the man, one receiving his penis, the other being thrust into by the strap-on during his back stroke. This technique maximizes the man's time and energy while pleasing two ladies simultaneously.

When a dude goes back and forth from multiple holes as your pulling his "ding ding" in an open air facility.

a young person ( usually a teenager) going food shopping with their parents and slipping their own purchases into the trolley without asking and smuggling them through the checkout and paid for without the parentals noticing. They then bag them up and keep them.
therefore their stuff bounces in and out of the trolley

A nickname for a person who sorts out trolleys in a supermarket car park.

a card load of trolls, older gay men, driving through campus to look at the chickens.