Add April fools module help banner

data/logos/help-using-a-module.txt

@@ -0,0 +1,15 @@
+ ______________________________________
+/ it looks like you're trying to run a \
+\ module                               /
+ --------------------------------------
+ \
+  \
+     __
+    /  \
+    |  |
+    @  @
+    |  |
+    || |/
+    || ||
+    |\_/|
+    \___/

lib/msf/ui/console/command_dispatcher/modules.rb

@@ -683,6 +683,7 @@ module Msf
             print_line '  search eternalblue'
             print_line '  use <name|index>'
             print_line
+            print_april_fools_module_use
           end
 
           #
@@ -1249,6 +1250,13 @@ module Msf
             return res.sort
           end
 
+          def print_april_fools_module_use
+            return unless ENV['APRILFOOLSMODULEUSE'] || Time.now.strftime("%m%d") == "0401"
+
+            banner = Msf::Ui::Banner.readfile('help-using-a-module.txt')
+            print_line("%grn#{banner}%clr")
+          end
+
           #
           # Convert squirrel names back to regular module names
           #