Hmmm... Is a sign that you are thinking of which looks like you are thinking of what you should do when you saw a mugger last night but your actually thinking about if you should go to the toilet now or when you get home.
by R3H15 Aus prototype March 17, 2019
Get the Hmmm...mug. 
Basically an answer to anything. It can be used in a chat when you have nothing to say about the topic in that chat or when you are bored af.
by RandomGuyWhoLikesBlue June 4, 2021
Get the Hmmmmug. 