When I look at those websites that compile silly pilot jokes, most of the time I think they make up the jokes, but I swear I heard these calls myself, and scribbled them on my OFP while giggling. I have changed only the call signs.
Centre: N123, I'm sure you have the airport in sight.
Pilot: I think I do.
Centre: You let me know when you're sure.
It was a clear day, and I suppose pilots familiar with the airport had been reporting the airport in sight further out, but I sympathize with the visitor. You can get embarrassingly close to an unfamiliar airport before you're SURE it's not an agricultural field or a straight spot on the freeway.
ATC: ABC are you on frequency?
Pilot: Turning back to practice area now, sorry 'bout that.
ATC: Proceed to the practice area and stay in there.
The pilot had just transited controlled airspace associated with a major airport in order to reach an uncontrolled training area, and the controller correctly guessed that he might still be on frequency.
"We haaaaave, well whatever's current at Edmonton" - major airline pilot
The pilot was attempting to say the identifying letter of the recorded airport information he had received, but realized after starting the sentence that he's forgotten it or couldn't find or read where he'd written it down. The elongated word while trying to think of the right information is so pilot-like, because we are trained not to say extra words. In ordinary conversation you might extend the sentence while looking for the information, "We have the current ATIS information here, it's ..." but that would sound ridiculous on the radio.