Chickenfoot

A skateboarding term used when a skater is unable to get both feet back on the board after performing a trick. Usually caused when the skater hesitates during execution or otherwise has an issue committing to the trick. Their feet are "chickening out."

"I can get my front foot on after I kickflip, but I just can't land it with both feet."
"Looks like a bad case of chickenfoot."