When a guy has three or more children by different mother's. Especially when the children were born at the same time.
by Cemetery Man October 16, 2015
Get the serial daddymug. Guy 1: Did you hear Arnold got another girl pregnant?
Guy 2: What?! He's definitely a serial baby daddy.
Guy 2: What?! He's definitely a serial baby daddy.
by kingslayer1234 May 25, 2020
Get the serial baby daddymug.