I am a bit late finding this but I too am a boy shorts wearer. The best ones I have found are silk shorties from a company here in the UK called Charlotte and Co but they seem to have stopped doing them so I am looking for alternatives. They are a little longer in the leg and come up quite high on the waist but they are so comfortable and I am fairly curvy. Because they are longer in the leg they don't ride up. Silk is obviously a bit more expensive but they wash well.