Ribbit!

[20:41] me: sweet i just won an argument with my roommate
[20:42] EK: over what?
[20:42] me: there's this thing making noise in the bushes outside our front window. she said it was a bird and i kept saying it was a frog
[20:42] me: she was poking around trying to catch the culprit...and did.
SCORE!
[20:53] me: ok we've got it ID'd. it's a gray treefrog.

[20:53] me: poor little sex-crazed guy...
[20:53] EK: are you insinuating something?
[20:53] me: *looks innocent*
[20:54] EK: [whack]

When I took Terrestrial Field Ecology one of the "labs" involved doing an auditory census of frogs in a local nature preserve. The prof had some frog call sound files on her computer where a male voice would read the species and common names, then the call would play. For some reason the way it said "Gray treefrog; Hyla versicolor" invariably made everyone burst into laughter.

Google Image Search for "gray treefrog amplexus" (yes, I'm dirty-minded) yielded the following: gettin' it on, froggy style