It reads, in part, "We built this business without gov't help. Obama can kiss our..."
It's causing a big stir over political speech in the workplace and the First Amendment.
Passersby we talked to had some strong opinions of their own.
"I think it's a little obscene, and could be a little more politically correct," Mark Paulus said.
Paulus said he doesn't find the sign offensive, but he does understand those who do.
Terri Smith said she's not a fan. "I'm thinking, wow these people are crazy," she said.
But most passersby seemed to be more upset by the language on the sign, than the political message it sends.
"The language could've been a little bit better," Chuck Ramsey said, "but I agree with the guys idea behind the sign."
Amy Ramirez said, "That's just wrong. No matter what your political views are, it's just wrong."
We tried to speak with the owner of the store, but he declined comment. Not long afterwards, the police showed up.
The sign itself is protected under the First Amendment, but some people Action News spoke with said they'd file complaints with DHL and FedEx's corporate parents.