swinging dick

Etymology
From. Appeared in US military and prison slang from the 1950s.

Noun

 * 1)  A man, especially one who exhibits bravado or machismo.
 * 2)  A man who is sexually very active.
 * 1)  A man who is sexually very active.
 * 1)  A man who is sexually very active.
 * 1)  A man who is sexually very active.
 * 1)  A man who is sexually very active.
 * 1)  A man who is sexually very active.

Usage notes

 * Usually used in phrases like "every swinging dick" or "big swinging dick".