Let's get lost is a famous quote by Leopold Slikk. It can sometimes also be heard as "YES GET LOST!"[1] or It's got lost. The actual German pronunciation is "Jetzt geht's los!" which translates into "Here we go!". Leopold utters the phrase five times around one minute and ten seconds into the original video.
The remix of "Let's get lost" was also composed by Pauladrian360.
At some point, it was discovered that the phrase sounds like "Sausage Eggs" in reverse. The earliest discoverable trace is the video "Angry German Kid Reversed With Fake Subtitles", published by by Jeeves476 on December 29, 2007.