The greatest thing in the entire universe. Believed to be a gift from god to the human race after making dabbing illegal in Sealand. Essentially liquid rubber in a can, it also takes the forms of flex tape, flex shot, and flex seal liquid
I sawed this boat in half and repaired it with only flex seal.
by Grand Yee October 27, 2017
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A tape brand that's become a meme over the years.
Did you hear about the Flex Seal meme where that one guy says "Now that's a lotta damage!"

Uhh, yeah, it's all over the internet..
by OyeahMrKrabz August 16, 2020
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A organization who uses a dark material named „flex tape“. Flex tape is very dangerous because if someone puts it into a hole it can create a portal to a demon realm. The founder of the organization is called „Felix tapé“.
Person 1: Hey, there is a hole in my underwear!
Person 2: Wanna seal the hole with flex tape, so it creates a portal to a demon realm?
Person 1: What is flex tape?
Person 2: it is a Material found by Flex Seal.
by The bäd böiiii June 21, 2019
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I'm Phil Swift Here With Flex Seal!
Flex Tape Was Such A Big Meme They Had To Make Flex Seal.
by Fiddlestxcks May 14, 2019
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When girls get all the STD's imaginable and need a little something to keep the peens out
"...she needs to flex seal that pussy, the last guy that's gonna enjoy that pussy is Phil Swift."
by Imakewordsmmmhmm October 10, 2021
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You can pour this right through cracks, weather proof your house, dip your tools in this shit idk
We took this entire airboat and covered it with only Flex Seal Liquid
by SOSOOSOS May 17, 2018
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