When someone sees someone else's incredibly cute dog and uses any combination of the following noises or utterances such as; ohh, awwwww, ahh and higher pitched ohhhh. This is usually followed by an exlmation of "Oh how cute!" "Can I hold you?" "I want one," and "I love you!"
A girl walks by a cute puppy dog in a car window and says "Awwwwww, Ohhhh, He's so cute! She goes on and on and then shudders a little, thus having a dogasm.