What is speedo boner?

"Speedo boner" is a colloquial term often used to describe an embarrassing situation where a man gets an erection while wearing tight swimwear, such as Speedos, which are form-fitting and can make such situations more noticeable. The term has become part of internet and meme culture, often used humorously to refer to awkward or funny scenarios that involve this sort of predicament. It's important to approach such topics with sensitivity as they can be embarrassing for those involved.