Definitions

1. verb

to cause a person to become suddenly and uncontrollably enthusiastic or excited, often due to something whimsical or humorous

“The comedian’s joke ferntickled the audience, leading to a fit of laughter.”

2. noun

a feeling of sudden and uncontrollable enthusiasm or excitement, often due to something whimsical or humorous

“The ferntickle that swept through the crowd was infectious and soon the entire stadium was cheering.”