ner ta'u lujvo

x1=t1=n1 is underwear, worn by/on x2=t2, for purpose x3=t3, worn under x4=n2

In notes:

fetpibyta'u: x₁=t₁ is panties/knickers/boy shorts (female genital underwear), serving purpose x₂=t₃
nakpibyta'u: x₁=t₁ is boxer shorts/boxer briefs/briefs/jockstrap (male genital underwear), serving purpose x₂=t₃
pibyta'u: x₁=t₁ is genital/crotch area underwear, serving purpose x₂=t₃