First Lady Michelle Obama was a NASCAR Grand Marshal at today's Ford 400 (so was her sidekick, Second Lady Jill Biden), so she naturally received a warm welcome from patriotic NASCAR fans. Kidding! She got booed.

To be fair to the classy crowd in the stands, the booing (to our ears) was short and mixed with cheers. Why was she booed? Twitter user @trodabumsoutgrl clears up any misconceptions: "It is not racial - Michelle Obama is scorned by Nascar fans because her husband is a job-killer socialist." Thanks for clarifying!

In case you were wondering, Obama and Biden presided over the event "to honor military troops and families and recognize new commitments by companies planning to hire and train veterans and military spouses."