Sugar and spice and everything nice? More like snot rockets and sonic stinkers — that’s what kids are made of.

And they want to know why.

Full steam ahead to Grossology: the (Impolite) Science of the Human Body. The inaugural exhibit at Frisco’s Sci-Tech Discovery Center uses hands-on displays to answer sticky questions about the body and its functions.

Kids make like lunch and crawl through a 30-foot-long model of the digestive system, visit the vomit center to discover what makes them hurl (it’s not veggies), and climb a skin wall made of giant moles and warts.

Each of the dozen-plus activities is grossly educational.

And a stinkin’ good time.

Sci-Tech Discovery Center, 8000 North Dallas Parkway, Frisco (972-546-3050 or mindstretchingfun.org).

Photo: Courtesy of Sci-Tech Discovery Center

GO
Fall Roundup at Nash Farm
What: Games and crafts for little pumpkins plus hayrides, a petting zoo, and pony rides.
Why: What the hay.
When: Sat., 10 a.m.-2 p.m.
Where: 626 Ball St., Grapevine (817-410-3185).

SEE
Choo-Choo Soul with Genevieve
What: Genevieve teaches tots (ages 2-5) about manners and their ABC’s with colorful songs.
Why: Stay on track.
When: Sun., 1:30 & 4 p.m.
Where: Bass Performance Hall, McDavid Studio, 301 E. 5th St., Ft. Worth (817-212-4280).

SING
Happy Birthday to Elsie
What: Toast the Borden spokescow’s 70th birthday with a glass of birthday cake-flavored milk.
Why: It does a body good.
When: Thru Oct. 18. Daily, 10 a.m.-6 p.m.
Where: State Fair of Texas, Food and Fiber Pavilion, 3921 Martin Luther King Jr. Blvd. (312-929-0504).