First scammer of the season--and not a good one

[Moggie]

How did you manage to keep a straight face through all that? Or at least not stand up and give her a standing ovation at the end? That is some seriously good acting (on your part).

[MannersMakethMan]

Me: OK, what year was [Child 1] born?
AS: I don't know, he's just turned 5.
I do the math and key in 2004.
Me: Now what year was [Child 2] born?
AS: I don't know.
Me: How old?
AS: 8, I think.

Something you're never told about being a parent: you'll be expected to instantly remember all your children's ages and birthdays at the drop of a hat. Some days you can't do it instantly and get the stare of doom. You should, however, expect the IRS to be asking one or two questions about children you're claiming for, like names and dates of birth.

[taxguykarl]

How did you manage to keep a straight face through all that? Or at least not stand up and give her a standing ovation at the end? That is some seriously good acting (on your part).

Thank you. I've been robbed of an Oscar quite a few times. Nonetheless, I've gone to the server room/manager office to maniacally laugh it up along side my CW's who long since left the room.
To answer your original query: Practice and training is all I can tell you.