A dipstick is when an individual walks up to an unsuspecting (seated) female victim and proceeds to stick his finger down her partially exposed ass-crack. He then looks her in dead in the eye and sniffs his fingers. Always a good ice-breaker.
by BDPclub April 4, 2010

While sitting on a toilet, a man with a large penis may accidentally check the fluid level of the toilet bowl. Especially undesirable when using public restrooms that are extremely nasty.
by Kalepsis October 13, 2007

One who has the intelligence of an oil dipstick in a car. Usually the oil is dirty and "not too bright" much like the person being described here.
by Buck May 9, 2003

when sat on the bog squeezing out a particularly long sausage, which whist still making its way out of your arse slowly and begrudgingly, also inadvertently touches the water.
My god, that huge meat and potato platter we had at the Hamburg Beer Keller last night, it reemerged this morning producing the dipstick effect.
by Streaker30 August 14, 2009

Sticking a q-tip up your butt and rubbing it on the inside a persons nose. Usually performed on someone who is sleeping.
by o0sambo0o September 5, 2008

