diff --git a/lectures/14_stacks_queues/README.md b/lectures/14_stacks_queues/README.md
index 81a69e3..1b71a20 100644
--- a/lectures/14_stacks_queues/README.md
+++ b/lectures/14_stacks_queues/README.md
@@ -121,6 +121,7 @@ int main() {
 	MultiplyBy multiplyByTwo(2);
 
 	// use the functor as a function
+	// surprising: the object itself can be used like it's a function.
 	std::cout << "Result of multiplying 5 by 2: " << multiplyByTwo(5) << std::endl;
 
 	return 0;
diff --git a/lectures/14_stacks_queues/multiply.cpp b/lectures/14_stacks_queues/multiply.cpp
index 3bb1886..a9c0198 100644
--- a/lectures/14_stacks_queues/multiply.cpp
+++ b/lectures/14_stacks_queues/multiply.cpp
@@ -20,6 +20,7 @@ int main() {
 	MultiplyBy multiplyByTwo(2);
 
 	// use the functor as a function
+	// surprising: the object itself can be used like it's a function.
 	std::cout << "Result of multiplying 5 by 2: " << multiplyByTwo(5) << std::endl;
 
 	return 0;