It's hard to believe his age!
No wonder everyone refused to believe her age.
I read probably the first 50 pages, and I was kind of flummoxed because I couldn't believe" Morris's age.
"When you go in for a check-up, your doctor doesn't believe your age," she said.
"If she didn't have such credibility, no one would believe her age."
He couldn't believe his own age or hers; he couldn't believe how eagerly he awaited the night and the bed together.
This chubby oaf of a leader would never believe Thurr's real age.
I was born in 1951....But there seems to be people that do not believe my age.
Similarly, Roth can't quite believe his age.
She believed her age to be 55 to 60.