I am of the falling over laughing

The first Google hit on "Pyramus and Thisbe" is the Pyramus & Thisbe Club of the U.K., "the organisation for professionals specialising in party wall matters."

Pause to let the Americans stop snickering at the phrase. A party wall, it turns out, is a wall on the dividing line between two properties -- where the division is somewhere in the thickness of the structure. This is the professional organization for solicitors and surveyors who deal in disputes over the jointly owned wall.

Rather than, as you might hope from the name, people who've had romances through walls. ETA: Or who heckle plays.

---L.