look up any word, like sex:
 
1.
Penis
(nelsons in particular)
Hey, check out nelsons dillywag!
by Ben June 06, 2005
 
2.
n. Describing one who never gets their work done and is always getting distracted.
"Ben, you are always being a dilly wag. You don't have any of your homework done."
by BTL^6 September 03, 2008