He taught you how to ride a bicycle, warded off the monsters under your bed and was your No. 1 fan on game day. So have you bought Dad anything for Father’s Day yet?

Fear not. All he probably wants for the holiday is a greeting card, according to a new shopping trend survey. One-third of the dads in a survey sponsored by Discover Card said they considered a card their ideal gift.

“Fathers don’t want to give the impression that they wish to be fussed over,” said David Stewart, a consumer-behavior specialist at the University of Southern California’s Marshall School of Business. “It’s all a part of the way we define the traditional masculine role.”

A quarter of the dads surveyed said they’d be happy with a meal at a restaurant. Gift certificates, dinner at home and sports gear rounded out their top choices.

Gift-buyers planned to spend less on dads than they did on moms, the survey found. Respondents estimated their Mother’s Day outlay at $41 on average, compared with $31 for dads.

Hallmark Cards estimates that Americans will buy 102 million Father’s Day cards.