Urethral tears, bladder infections, kidney infections, urethral strictures from scar tissue, and in severe cases urethral perforation requiring surgical repair represent common complications from urethral sounding. Vibrating penis plugs carry all standard sounding risks plus potential for vibration masking warning pain signals, making meticulous sterile technique, conservative sizing, and strict depth limits critical for reducing but never eliminating the substantial medical risks urethral play inherently creates.