When I see a bodybuilder wearing overly baggy posing trunks, I always wonder what might have led them to choose such oversized ones. Custom-made posing trunks have been available for a long time, so even if a bodybuilder has a small dick, they can still find posers that won't be so excessively loose on them. However, it could also be that the person has some kind of body image issue and believes their genitalia can fill such large trunks. In any case, the point is that even these baggy posing trunks of Dennis Reinhold still reveal certain contours, which we greatly appreciate.
A frame from the video: