Invitation to a baby shower was one thing. This was - it was something else, even if it was something similar. Family gathered together on Thanksgiving, in a whole thing; he just hadn't thought that he would be interrupting an Arrow-Bat collaboration. He didn't know which side of that terrified him more, the part that was Mia pushing at him, or the part that was Bruce and the iron ton of expectation dropped on him with a single brush.
"Nope," Jason said, taking a prudent step back from the balloon-printed bag and it's contents of four picture books, and the offered brush. "I've got shit to do." That was even true, more or less. There were always things to do in Gotham, even things that didn't involve the Riddler directly.
"I'm afraid the pie won't be ready for another hour, young Master Jason," Alfred said, appearing behind his ear like a wraith. Jason weighed his options: Paint something in Stately Wayne Manor for an hour, or miss out on Alfred's pie?