Top Definition
Short form for "Stifle Until Shit Flies" (out of your nose). A softer, quieter version of "LOL" in the internet world. While cruising online at the workplace, professionals, ie: bank managers, sometimes come across humorous information online and can't laugh out loud at the risk getting caught by co-workers. They simply SUSF (stifle until shit flies), and hope no one notices them painfully holding it all in.

SUSF exporting levels from the nasal passage may vary depending on cold or sinus conditions.

1. While scrolling the thread, Gord noticed the picture posted from Newfoundland and immediately began to SUSF, desperately hoping his colleagues would not notice.

2. "Thankfully I didn't LOL, but I sure SUSF'd when I saw the list of popes", PK commented to Pauly.

3. Klingsor never LOL's or SUSF's.
by Rico Persson August 13, 2007

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Short form for "Stifle Until Shit Flies" (out of your nose). A softer, quieter version of "LOL" in the internet world. While cruising online at the workplace, professionals, ie: bank managers, sometimes come across humorous information online and can't laugh out loud at the risk getting caught by co-workers. They simply SUSF (stifle until shit flies), and hope no one notices them painfully holding it all in.

SUSF exporting levels from the nasal passage may vary depending on cold or sinus conditions.
1. While scrolling the thread, Gord noticed the picture posted from Newfoundland and immediately began to SUSF, desperately hoping his colleagues would not notice.

2. "Thankfully I didn't LOL, but I sure SUSF'd hard when I read that", Ricard commented to Pauly.
by _Persson April 20, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt