Singer Nick Lachey give Betty advice; a senior tries to enforce a height requirement at a basketball game arena; a man tickles a stranger with a feather.

Fashion designer Nicole Richie joins Betty and the pranksters.

Actress NeNe Leakes helps Betty and the seniors play pranks as reactions are caught on camera.

Reality-TV personalities Adrienne Maloof, Camille Grammer and Kyle Richards participate in a photo shoot with Betty.

Some of the funniest pranks from season one include writing tickets for made-up violations, offering a stranger $500 for their pants, and flying with balloons.

TV host Nick Cannon discovers Betty's dark side; an elderly man in a bathrobe looks for the art class in which he will be a nude model; a lady who offers to take pictures of tourists turns the camera on herself; a prankster sanitizes shopping carts.

Pranks include sperm solicitation, park proposition, wife-watcher, senior rhymes and Betty's game night.

Pranks include senior raves, Betty's workout, scorpion potion, texting revenge, Hawaiian wishes and Betty's fortunes.

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Favorite past pranks include a man pulling his own tooth out, a woman propositioning a young man at the airport, and a man asking a girl to help secure his care with tape.

Pranks include two seniors asking for the location of a rave, a woman asking men to bite candies off her shirt and an elderly man proposing to his girlfriend with surprising results.

Tricksters direct traffic in a grocery store and cut loose in an arcade; a young girl receives a ticket for an absurd violation; bubbles are blown on shoppers.

Favorite moments from season one include a woman asking to cuddle with a stranger, a prankster's tie is stuck under a parked car, and a priest and a nun kissing in a park.

Actor Ed Asner joins Betty and the pranksters; a woman asks for help checking items off her bucket list; two seniors give a jogger a martini; a man's dentures fall into someone else's coffee; a woman sneezes into her husband's ashes.

Pranks include Wink Martindale getting surprising news while pretending to tape a game show; a woman asking for help after her dog gets stuck in a strange place, and two pranksters setting up a metal detector on the street

Pranks include a lost skydiver asking for directions, an older woman ordering a younger man online and a prankster repeatedly hugging a stranger.

Seniors target unsuspecting young people with pranks that include pouring a late spouse's ashes on a park bench and writing tickets for makeup violations.

Pranks include an old woman asking a young man to buy her beer, a snack vendor sampling her drinks before selling them and two men trying to get another to do the wave with them.

Senior citizens play pranks that include escaping from an ambulance, snagging groceries from other people's shopping carts, and falling asleep while operating an electric scooter.

Senior citizens play pranks that include a humorless waitress who runs out of everything, a man who reprimands people for walking too fast, and a mail carrier who tries to pass his responsibilities onto someone else.

Betty receives a visit from Adam West; pranks include an elderly couple who wants to swing with a younger couple; a woman asking a stranger for help playing a trick on her husband, and a man who claims his heart from an unusual donor.

Ahhh senior citizens: blue-haired, discount card-holding pensioners slowly winding down through their golden years. So sweet, so kind, so... out of control and outrageous?!

Actor Rob Schneider plays Betty's shrink; pranks include a man trying to recruit another for a bromance, offering free backrubs to passers-by and trying too hard to prevent littering.

Senior citizens play pranks that include nuns raising money in an unusual way, a man altering a shirt in a store, securing a car with tape, and partaking in someone else's meal in a restaurant.

Psy teaches Betty and her pranksters how to dance Gangnam style; a jogger steals food from a restaurant patron.