tour barnacle
v. to loiter at the edge of a tour group that you are not a part of in order to overhear, for free, the tour guide’s information
n. a person loitering at the edge of a tour group of which they are not a part
n. a person loitering at the edge of a tour group of which they are not a part
Let's tour barnacle that group looking at Michelangelo's David statue, the guide speaks English and I want to know why David's naked.