Forum:Translation Help

We don't really have an off-topic section so I'm throwing it in here I guess...

I'm translating a few images for my FB fan page but I'm stumpped but something I never encountered...

I ran into a little tsu with nothing after it. I am aware that they are used before other hiragana for double constants like matte (まって) but I never seen one with nothing after it. And to my knowledge the japanese don't have any words that end in constants they all end with vowels ... And I highly doubt its a comma since the question would be why is there a comma before other punctuations (! / ? ).....