Happy Hendrix, Bouncing Buddy

Popped around to pick up Joanne to go on to school to pick up Dhylan who had a dental appointment at Gloucesteshire Royal Hospital, something to do with his brace, nothing serious.
When I went in I obviously took Hendrix by surprise and I couldn't think of another word to go with Hendrix to suit his look. Hapless, Horrific, just didn't seem to fit either.
Buddy was full of smiles as he made himself bounce in the bouncing contraption!