phallocrypsis

phal·lo·cryp·sis

(fal'ō-krip'sis),
Dislocation and retraction of the penis.
[phallo- + G. krypsis, concealment]

phallocrypsis

(făl″ō-krĭp′sĭs) [″ + krypsis, hiding]
Contraction of the penis so that it is almost invisible.

phallocrypsis

retraction of the penis.