diff --git a/include/user/stimFrame.h b/include/user/stimFrame.h
new file mode 100644
index 0000000..0468513
--- /dev/null
+++ b/include/user/stimFrame.h
@@ -0,0 +1,31 @@
+#ifndef _STIM_FRAME_H
+#define _STIM_FRAME_H
+
+#include <cstdint>
+
+namespace smo {
+namespace stim_buff {
+
+/**	EXPLANATION:
+ * A simultaneity stamp is a timestamp that is used to determine whether two
+ * stimulus frames occured simultaneously. Its purpose is adamantly *NOT* to
+ * record or denote the "absolute" time of the stimulus frames. I cannot stress
+ * this enough.
+ *
+ * The SMO has absolutely no notion of "absolute" time. It only has a notion of
+ * simultaneity among stimulus frames. Any notions of "absolute" time are built
+ * up consciously and volitionally by the running mind, and not baked into the
+ * underlying software (i.e: Salmanoff).
+ */
+typedef uint64_t SimultaneityStamp;
+
+class StimFrame
+{
+public:
+	SimultaneityStamp simultaneityStamp;
+};
+
+} // namespace stim_buff
+} // namespace smo
+
+#endif // _STIM_FRAME_H