Shrub

Etymology
A play on his surname, a shrub being a smaller bush, thus indicating that he is the junior Bush in relation to his father. Popularized by American newspaper columnist (1944–2007), who co-wrote Shrub: The Short But Happy Political Life of George W. Bush (2000) with.

Proper noun

 * 1)   (born 1946), the 43rd president of the United States (2001–2009).