'Big Bang Theory's' Mayim Bialik and Johnny Galecki Recreate 'Blossom' Kiss

Mayim Bialik and Johnny Galecki on Blossom - H 2016
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The CBS co-stars opened up about their first onscreen kiss on 'Conan.'

The Big Bang Theory's Mayim Bialik and Johnny Galecki go way back — to the 1990s.

The co-stars, along with the rest of the cast, visited Conan Wednesday night to celebrate the CBS hit show's 200th episode, but the host had another TV show to cover first. 

Bialik and Galecki first met on hit '90s show Blossom when they were both 14 and shared their first onscreen kiss. "It might have been my first real-life kiss also," Bialik admitted to host Conan O'Brien. 

"Do it again!" urged co-star Kunal Nayyar, with the audience responding enthusiastically. "What kind of show is this?" asked Jim Parsons. 

O'Brien showed them a picture of the Blossom kiss, to friendly jabs about Galecki's blouse and hair. Eventually, after plenty of prodding, the cast convinces the two to recreate the kiss. 

Watch the full video below.