lettucehead

A person who is lacking in substance.

A head of lettuce, while filling, provides little to no nutritional value. Similarly, a lettucehead is someone who often talks without contributing anything worthwhile to a conversation.

Origin: Parts Unknown
Dan: Enough with the mustang talk, Nick! You're such a lettucehead.

Tim: Wow, that is a fantastic point, Nick, you're definitely not a lettucehead!
by Mortimus Maximus February 09, 2013
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