swim briefs; Speedos
Colloquial wasei-eigo term for men's tight, brief-style swimwear. The name comes from the shape resembling a boomerang.
wasei-eigo (Japanese-coined English), from boomerang pants
He was wearing flashy swim briefs at the pool.
Many people feel uncomfortable with swim briefs.
Variant with interpunct; less common but still seen.
Wasei-eigo from English 'boomerang' and 'pants', referring to the boomerang-like shape of the swimwear.