An individual who cannot think for themselves. They ask for assistance to make decisions from others, but rarely if ever follow their advice. A very weak minded person who constantly complains about their situation, but cannot find any solutions to change it. A pussy headed idiot.
Student #1: Wow! That junior high principal seems lost and can't figure out the policies in the school handbook.

Student#2: Yeah, Mr. Culver is a real limp brain. He needs to go back and work at DHS with Clifton.
by skypie July 26, 2011
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when somebody doesn’t have a big brain they have a limp brain.
did you see jackson he’s such a limp brain.
by realbrian September 12, 2019
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