diff --git a/2025/src/user.clj b/2025/src/user.clj
new file mode 100644
index 0000000..a75b0e1
--- /dev/null
+++ b/2025/src/user.clj
@@ -0,0 +1,16 @@
+(ns user
+  (:require
+    [clojure.pprint :as pprint]))
+
+(do
+  (defonce printer (bound-fn* pprint/pprint))
+  (add-tap printer))
+
+(comment
+  ;; tap debugging
+
+  (remove-tap printer)
+
+  (tap> :test)
+  )
+