Boxer briefs
Boxer briefs are men's underwear.  They are tight like briefs but still have long legs like boxer shorts. They are popular and are worn by lots of teenagers and young men. They are sometimes called retropants, retros or retro shorts. They are are fashionable men's underwear that, unlike boxer shorts, are not cut wide, but rather fit snugly on the skin. That keeps the penis and testicles from moving and bouncing a lot, which some men find uncomfortable. The name retros is used because the cut or style comes from underwear styles from the 1950s or even earlier. Boxer briefs reversed the trend from the 1960s through the 1980s in which the popular cuts (styles) of underwear and swimwear became smaller and smaller, especially for teenagers and younger men.