1 definition by Chris' Sister

Top Definition
Rolling Up Stairs Laughing

Similar to ROFL (Rolling on floor laughing), RUSL is used to respond to the next level of humour.
RUSL should only be used for special occasions when something is amazingly funny, otherwise its strength and impact will be lessened considerably.

"<insert mindblowingly funny statement here, too funny to be reproduced for a definition here>"
"RUSL!"
by Chris' Sister November 04, 2007

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