The honest ones will acknowledge that the Bible is all they have, and that it's sufficient for them. The dishonest ones are amusing.
I've realized the only non-Biblical arguments I've seen for it are jabs about how the 4.5B year estimate is unreliable due to dating.
I've yet to see a positive scientific argument for a >10,000 year Earth.
The honest ones might consider that the "day of Man" is about 6000 years according to Genesis (and a bit of counting,) and the dishonest ones who refuse to look at that text will continue to say things that it does not really say.
S.J. Gould at least had that part correct when it came to people actually refusing to look inside of a horse's mouth in order to determine how many teeth were inside of it.