Code for “I’m falling in love with you.” It originates from the Netflix series Everything Sucks!, in which the character Luke promised to use this code word if he found himself falling in love with the lesbian character Kate.

This phrase is generally used on its own with no context.
“If I find myself falling in love with you, I’ll yell ‘banana slug!’ and you can head for the hills.”
by OfAvalor March 10, 2018
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A yellow soft shell slug that has no scientific meaning nor purpose
That banana slug is awesome

Tatum looked on here cause I said banana slug
by Imtotallychildish February 3, 2019
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Official mascot of University of California, Santa Cruz.
Q:What's the mascot of UC Santa Cruz?
A: It's a banana slug!
by li0n12 April 28, 2009
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Older transsexual person.

The equivalent to "cougar" for a she-male.
Banana Slug's have TWICE the experience cougars do, since they can practice on them self.
by psychognosis July 28, 2010
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cool little yellow slugs that can meditate on sweatshirts.
DUDE!!! She has a banana slug sweatshirt. It's like so totally meditating. I must have one now!!! *steals*
by colorguardhobbit October 10, 2004
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The act of taking one's flacid penis, putting(or slapping) it on another's face, and getting an erection. A form of foreplay.
The way he banana slugged her in that video was disgusting.
by Anonymous2744 March 4, 2011
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To srtip down naked and lather in argan oil and lay down by a fire while squirming around on the ground.
Did you hear what Stacy did today. I heard she was banana slugging with britiny.
by Yuki the dragon slayer January 19, 2016
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