thirty thousandaire Share definition Flag n. someone who lives above their means or wants people to think they are rich. prevalent in Dallas, Texas. Sam's not rich. He leases that Beamer and rents that condo. He's a thirty thousandaire. thirty thousandaire by MDub November 8, 2005 0 0 Get merch Get the thirty thousandaire mug. Buy Now — $32.95 See more merch