John Legend and Chrissy Teigen are one of the most creative couples in show business, but even they’re scratching their heads at choosing the perfect moniker for baby No. 2.
During a Monday chat with Ellen DeGeneres on her daytime talk show, the 32-year-old model admitted she and her musician husband, 39, are struggling to come up with a name for their son on the way.
“Boy names are really tough,” said Teigen, revealing that her son is due in June. “I don’t even think he’ll have a middle name because we can’t even think of a first name.”
The Lip Sync Battle host tells DeGeneres that the couple came up with 22-month-old daughter Luna Simone‘s name during a very fitting evening.
“There was a blood moon happening. It was a very beautiful night — really big, vivid red moon, just gorgeous,” she explains. “I have this love for space, and I think about space camp all the time, and my days at space camp as a youngster.”
“And so I just thought Luna was perfect, and she’s a perfect Luna,” says Teigen.
“What about ‘Lunar’ for him?” jokes DeGeneres, to which the mum-to-be replies, “Lunar, I like it! Very [The Adventures of Pete & Pete] , remember that show?”
“What about ‘Urban?’ Urban Legend,” says the host, eliciting laughter from the audience and her guest.
“I’ve been toying with Dick Legend a lot … Richard Legend,” says Teigen. “Everyone’s like, ‘Why don’t you do the J.J. thing, John Jr.?’ But John and his ego, he was like, ‘I don’t want him to feel like he has to live up to that.’ ”
“And I was like, ‘Wow, you are a jerk,’ ” she jokes. ” ‘Sorry, heaven forbid he do what you do. So incredible.’ “
This article originally appeared on PEOPLE.