While it may seem like a humorous anecdote to share with friends, having your swimming trunks sucked off can be a real problem. Not only do you have to deal with the awkwardness of being in public without your swimwear, but you also have to worry about finding a suitable replacement or walking around in your underwear for the rest of the day.
: Smaller, tighter swimwear like swim briefs (often called "budgie smugglers") offers less drag and is less likely to be pulled off by current than baggy board shorts. How to Handle the Situation My Swimming Trunks Have Been Sucked Off