Poololoop is a programming language whose source code is the programmer running a path, measured with a GPS. The loops in the running path encode a lambda calculus program. The language is defined in this article:
George(s) Zakhour, “Getting Up and Running the λ-Calculus”, in a record of the proceedings of SIGBOVIK 2024 the eigtheenth annual intercalary robot dance party in celebration of workshop on symposium about 26th birthdays; in particular that of Harry Q. Bovik, p. 23., Carnegie Mellon University, ed. The Association for Computational Heresy, Pittsburgh, PA, April 0, 2024.