(colloquial) Excited about one's imminent release from prison.

(colloquial, lighthearted) A photograph.

(slang) A vertical line of hair that extends up along the middle of a person's (usually a man's) abdomen from pubic hair to navel.

An expression of good wishes for somebody's future: best wishes, good luck.

plural of happy trail

(music) A genre of rave music typified by a very fast tempo and a bright, cheerful sound, often coupled with solo vocals and sentimental lyrics.

plural of happy ending

The Chinese ideogrammic compound 囍, often used as an ornamental symbol in Chinese celebrations.

(Australia) Used to express displeasure at someone else's incompetence.

plural of happy-clappy