The game was most likely updated and your files might have gotten corrupted.

Please try the following steps:

Go to: Settings -> Applications -> Booty Calls: Men at Work -> select Force Close

Go to: Settings -> Applications -> Booty Calls: Men at Work -> select Clear Data

Uninstall the Booty Calls: Men at Work app

Reboot your phone

As soon as your phone starts, direct your browser to Nutaku to download the Nutaku Android Client for automatic game updates.

Although we do not recommend this, you can directly download the game from the link below, but you will have to update it manually and it might cause bugs if you continue using an outdated version.