If you think when you get to the Pearly Gates, St.Peter says "Y'all hop in the pickup, we're goin' up to the big house!" you might be a redneck.

Others:
If you've had to climb up on the town watertower with a can of spraypaint to defend your sister's honor, you might be a redneck.

If your grandma says "Hey everybody, come look at something weird" before she flushes the toilet, you might be a redneck.

There are also the redneck work "ah-ite", "yuntoo?" and "jeet?" BTW "jeet?" is also part of me and my family's Philadelphia accent, along with "Yeeuh".