"Grinning, ducking and running," said after a snide remark. Another variation is GD&WVVF, which stands for "grinning, ducking and walking very, very fast." See digispeak.
"GD&R." YourDictionary, n.d. Web. 07 June 2018. <http://www.yourdictionary.com/gd-r>.
GD&R. (n.d.). Retrieved June 07th, 2018, from http://www.yourdictionary.com/gd-r