An involuntary muscle spasm located in the male genitalia. This spasm can last for two to seven seconds, and causes can include sexual stimulation, sexual over-stimulation, urination, electric shock, or extraneous sensory perception. No medical attention is required, although you should contact your doctor if you experience a penile flutter lasting longer than four hours, or if redness or discomfort occur.
"Oh man, that girl at the end of the bartotally gave me a penile flutter."
The indescribable feeling which spreads throughout one's body ie.stomach or loins, during particular moments in life. Such moments include gazing deeply into that special someone's eyes, sharing a warm hearfelt kiss, or just spending quality time with each other.
From the moment his lips touched hers, the flutter bugs swept throughout his body. It was a moment he would never forget.