Take a swim
When you drop a pill like Xanax in a drink to get high
Guy 1: ay man I got xans and a bottle of JD wanna take a swim?
Guy 2: fuck yeah!
Guy 2: fuck yeah!
take the kids swimming
For a gay man, it refers to him taking a dump. The "kids" are really turds, analogous to a woman's childbirth
That was a big meal we had. It's time for me to take the kids swimming.