Selina strolls in and gets a note from Jay when she hops up onto a bar stool. She also gets the infamous note from Bar.
"You know I'm underage right?
Okaaay, but can I have one of those t-minus things before you call it a night? Awesome thanks."
So saying, she walks around to the other side as she fires up the strange device. It kind of gives her heebie jeebies, truth be told, but she's a Gothamite, she'll deal. Then she remembers she needs to put up specials if this is going to be a happy hour.
Happy Hour Specials*
Pop, whatever flavor (assuming I can find it)
Floats (with ice cream or whatever)
Shaved ice
Making the sign takes her a lot longer than one might expect if they'd been watching (and you wouldn't do something creepy like that would you?), with her having to rewrite several of the words many times. Once she's satisfied with the results (more like giving up to be honest), she settles against the back counter and goes back to figuring out the t-minus.
[OOC: Feel free to have pups notice the writing is pretty poor in penmanship and perhaps even has wrong words or letters within. Here for a couple hours and then maybe back later.]