Do a Google search, my friend. There's an urban dictionary definition that fits it quite well, but I won't post it on this "family oriented" website. :D
I know I know. I'm not totally in the dark for what the meaning of a jackwagon is...having fun!! But I did look it up bc urban dictionary is entertaining. " loser. Someone who is totally worthless". I resent that remark Dan!!!
Someday young grasshopper I will leave the door open for you to nail me. Until that day stay thirsty my friend.
Wait a minute..... Where did you find the "G" rated definition? Here's the one I saw on my first click:
I use the G rated urban dictionary for young grasshoppers Jack Wagon An incredibly large piece of fecal matter which sticks 6 inches out of the toilet water.