Is Adam Levine already thinking of having a baby with wife Behati Prinsloo?

The "Voice" coach recently posted on Instagram a funny image of a baby who appeared to be sleeping with its head leaning on its hand. The words on the image read, "Thinkin' about dem titties."

Adam Levine wrote, "Such wisdom."

While it could just be "The Voice" coach sharing a cute image, Adam Levine did say in an earlier interview with Ryan Seacrest that he wants many kids with wife Behati Prinsloo.

"We're definitely going to do it," he said. "I want to have 100 kids. I want to have more kids than would be socially responsible. I don't know when we're going to do it. We can't do it right now. I think it's absolutely in the works for some future date."

In a 2011 interview, the 36-year-old Adam Levine already has a timeline on when he's going to have kids.

"Where do I wanna be when I'm 42? I would (like) to be working less and... considering the idea of having a family and at that age I like the idea of having a two year old. I want to start having kids," he said.

But Adam Levine and Behati Prinsloo are clearly enjoying each other's company as husband and wife and having kids is not yet in the horizon.

Meanwhile, the "Voice" coach has invested in an online mattress company.

Casper Sleep Inc. raised $55 million in Series B venture funding on the strength of new investors that include celebrities like Adam Levine, Leonardo DiCaprio and Tobey McGuire, said the Wall Street Journal report.

Philip Krim, co-founder and chief executive of Casper, said that company "would use the new funding to ramp up production of mattresses and to strengthen its supply chain overall so that it can enable on-demand delivery to customers beyond New York."