@vicknick dude! Don't walk into them in the first place. You missed great opportunities to chase fame or set discretion frames that wouldn't have took this seriously and teased her.
Chase frame
I think it's cute you're checking me against your boyfriend criteria
Chase frame with tease
Oh wow it's like you're vetting me to be your husband, just so you know I'd want a chocolate cake
Discretion frame
A gentleman doesn't kiss and tell
Flat out teasing
(Look like you're trying to figure it out and add up) say random things like carry the one and add those two, but the ones from Vegas don't count umm I'd say close to a billion
Other tease after she brings up diseases
What diseases? (Look a little worried but then smirk)
A caveat to this, she asked how many you went on a date with, not how many you've bedded. So say "ohh you meant how many I've bedded" followed by the teasing from above
Your challenge is creating friction and you've already failed the test.
Getting into this puts your head on the chopping block if she doesn't like the number. Maybe hers is even higher (probably not in this case). Getting into this before you've bedded her is a really bad move, even after you've bedded them I avoid this and give tease answers, never take this stuff seriously