There are at least two artists that use this name:

1) Sorry for Laughing was formed in southern California in late 2010 by Dylan Thomas Walter, Thomas Jefferson Walter and Gabo Hernandez-Zepeda. They currently play shows in the Los Angeles/Orange County area and are scheduled to release their debut LP at some time in 2011.
The six demos the band recorded are available here: http://theprocessofelimination.bandcamp.com/album/sorry-for-laughing-demos

2) Sorry for Laughing is a solo project of Gordon H. Whitlow from Biota. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.