Reposted from Download Squad:

Instant Rimshot
The classic, and likely original site in the genre. Load this site up before you tell a joke, and hit the button to punctuate your punch line.

Sad Trombone
Created in response to Instant Rimshot, sad trombone is useful when delivering bad news. “Honey, I accidentally drove the car into the garage door…” insert sad trombone sound here. Your significant other will be laughing so hard they won’t mind the bad news.

Instant Crickets
An alternative that is probably good to have open alongside Instant Rimshot when telling a joke. Use Instant Crickets when your joke doesn’t go over well at all. This site is particularly useful in corporate meetings when telling politically incorrect jokes.

Emergency Yodel
When everything seems to be getting you down, you can always rely on your Emergency Yodel button. Yodels are like hugs, making everything just a little bit better. Maybe when my aunt Beatrice comes to town again she’ll accept a yodel instead of a hug? (insert Instant Crickets sound here)