A sexual act where you pour 1 to 2 beers of budwizser in a girl's ass, then you fuck her in the ass doggie style till beer and shit starts flying out of her ass. Then follow with a southern dumptruck.
Man, my girl got so drunk last night, I gave her a southern jackhammer, then she gave me a southern dumptruck.
The sexual act only followed after a southern jackhammer, in which the girl sucks your dick off and licks all the cum, shit and beer off your dick and balls. The male usually is unshaven and not showered. It's usually a summer family tradition.
If you give her the southern jackhammer you better have a southern dumptruck ready to go!
The act of getting revenge on your dad by impregnating your grandmother and making you child his half sibling.
My dad fucked my sister again, time to alabama tango him again.