It turns out that "FU" is on a long list of letter combinations barred by the division, said Mark Couch, spokesman for the Department of Revenue. Think of it as "Eff you," he said.
"We don't allow 'FU' because some people could read that as street language for sex," Couch said.
In case you were wondering, Ms Coffman-Lee drives a Suzuki. Just sayin'.