It’s painful to watch, really. Two men on a stage with more than 100 primed mousetraps. Did I mention they’re blindfolded, barefoot and wearing tuxedoes?

“Rat traps,” Brad Sherwood tells the audience. Then he removes a large zucchini from his pants and demonstrates how it neatly slices the vegetable in half.

The audience “ooohs” trepidatiously. Sherwood nods, completely deadpan.

Sherwood and Colin Mochrie (“From ‘Whose Line Is It Anyway?’” their touring posters say) call it the mousetrap game, and they’ll be doing a version of it when they play the Pikes Peak Center on Sunday.

“Of our games, it’s probably the least improv game, Sherwood says from his home in Los Angeles. He and Mochrie reserve touring for the weekends. They’ve been performing together for about 19 years now, six as a touring team. “The audience just loves it. They love seeing the pain. There’s an innate cruelty to comedy, from the early days of slapstick, and that’s where this comes from.”

Like all improv, they work with no script, only a set list of games and audience suggestions.

“The difference between improv and stand-up, for the audience, is they are there for the moment of creation,” he says. “They weren’t there for the stand-up comedian, when he wrote his act and took it to clubs and perfected it word by word, beat by beat. We’re making them laugh and doing a magic act at the same time.”

Question: About performing without a script: Do you feel fearless at this point, or were you always that way?

Answer: I think we’ve always felt fearless. It’s a giggle to go out there and you don’t know what to do. It’s the action sport of performing to only go out there with what games you’re going to play but no idea what the content is going to be.

Q: Improv always seems like a small-venue thing to me, but you’ve played some pretty big halls. Does it work differently there?

A: I think every audience is a big audience. Seriously. In a room with 50 people and only 50 seats, it feels like the same energy as 300 in 300 seats — or 1,000. There’s something about a packed room. You work off it, and the audience feeds off your own excitement.

And we bring people out of the audience for most of the games, so there’s usually a live human being on stage trying to mess with us for most of the show.

Q: “Whose Line” made improv a pretty mainstream notion. Does that make it easier or harder for you?

A: I think it makes it easier on the level that people tend to have a greater awareness of it and people come to the show. A crowd makes it easier. Although there are people who think we must be taking a short cut and there are tricks that we have. People are always looking for the trap door. In some ways, that’s a great compliment. On the other hand, they think we’re liars. We’re either frauds or big geniuses.

“Colin Mocherie & Brad Sherwood: The Third Farewell Tour”

What: Improv by two stars of “Whose Line Is It Anyway”

When: 7 p.m. Sunday

Where: Pikes Peak Center for the Performing Arts, 190 S. Cascade Ave.

Tickets: $29.50 to $44.50; 520-7469, 1-866-464-2626 , ticketswest.com and TicketsWest outlets.

“COLIN MOCHERIE & BRAD SHERWOOD: THE THIRD FAREWELL TOUR”

What: Improv by two stars of “Whose Line Is It Anyway?”

When: 7 p.m. Sunday

Where: Pikes Peak Center for the Performing Arts, 190 S. Cascade Ave.

Tickets: $29.50-$44.50; 520-7469, 1-866-464-2626, ticketswest.com and TicketsWest outlets.

It’s painful to watch, really. Two men on a stage with more than 100 primed rodent traps. Did I mention they’re blindfolded, barefoot and wearing tuxedoes?

“Rat traps,” Brad Sherwood informs the audience. Then he removes a large zucchini from his pants and demonstrates how it neatly slices the vegetable in half.

The audience “ooohs” trepidatiously. Sherwood nods, completely deadpan.

Sherwood and Colin Mochrie (”From ‘Whose Line Is It Anyway?’” their touring posters say) call it the mousetrap game, and they’ll be doing a version of it  when they play the Pikes Peak Center on Sunday.