Cock shy

[Zipporah Schumaker]

a person too frightened to have a sexual encounter
a sex game where three males with erections stand in formation and the opposing team throw ring doughnuts over the erections - like quoits

[Renato]

Entering a public restroom for a quick wizz and upon seeing other men at the urinal, opting to use the stalls instead. Usually implies one has a small penis.

[Renato]

A male (usually teenaged) who is pathologically shy about exposing his genitals to other males such as when stripping off in locker room and/or showering publically with other men at a public facility. Someone afflicted with cock shyness is often a mommys boy with a low bodily self-esteem and poor social skills. These poor fellows will often change into their sports gear at home and leave after the game to shower elsewhere.