Definition from Wiktionary, the free dictionary
Alternative forms 
- An affable or happy-go-lucky carefree convivial man.
- "just a good-time Charlie, borrowing two bucks here and five bucks there" -- Walter Karig
- "I couldn't be a good-time Charlie ... when I was a kid I was taught not to talk or joke or laugh at the table" -- A. J. Liebling
- "You listen to me, you find yourself a nice, substantial man -- a widower maybe -- and settle down -- instead of nashing all those sleeping pills -- for what, for whom? -- for some Good Time Charlie?" -- Billy Wilder, The Apartment, (1960)