How do you know if you run out of invisible ink?!
Question: Read the invisible manual, if you can find it.
Answers: Read the invisible manual, if you can find it.
The bottles empty!
Because you can see what you're writing...
You wouldn't be able to tell. You have to ask your invisible friend for help.
when you hold it up to a light, it shows up.
When the black light doesn't show any scribbles of the invisible ink...but I'm sure if you run out of ink you could always use the drool on the pillow!
You never run out of invisible ink.
A question that has plagued mankind for centuries I believe.
~
Because it turns invisible only when it dries,which is a few minutes after the fact?
Because you would not be able to write in secret anymore ?
Because the recipient of your correspondence has asked why you keep sending them blank paper!
You can see the ink...
When the bottom of the container becomes visible....hehe
Your seeing eye dog would tell you, of course.
:-)
xoxox
It's really easy when you use your secret decoder ring.
When you run out of invisible paper too...!!!
the pen feels lighter.
xxx
When you stop getting replies to your mail
Because you can start to see the words
slam dingaling in the door to find out.