Melbourne researcher Tullia Jack recruited 30 volunteers to do just that - and will soon exhibit the grimy garments at the National Gallery of Victoria so the public can put them to the pong test.
She hopes the unusual experiment for her Master of Philosophy thesis will challenge our culture of "extreme clean".
Despite stains and spills ranging from tuna and avocado to motor oil and chocolate, Ms Jack says the expectation dirty denim will be whiffy is much worse than the reality.
"Not washing your jeans isn't nearly as bad as it sounds," the Melbourne University student and RMIT fashion lecturer says.
"You really don't need to wash clothes as often as you think. Stains come and go, they just wear off."
Thirty people of all ages took part in the experiment. Several of them decided to stop washing their shirts as well. Half the participants ended the three months saying they still didn't plan to wash the jeans. Link -via Fark
(Image credit: Mike Keating)