Our airport has parallel runways. one is 7200x150 and the other is 5000x75.
Tower: N#, clear to land 17 right.
Transient: Clear to land 17 right.
A little while later.
Tower: N#, clear to land 17 RIGHT.
Transient: Clear to land 17 right??
Tower: N#, that's the short runway.

GeorgeC