This is a phrase, rather than a word, but:
foreign instrumentation signals intelligence
wonky
Glockenspiel!
Kumquat
Phlegmatic
Mellifluous
Doorbell (Because it sounds like a doorbell.)
Syzygy
Dipthong
Zygote
Integral
Oboe
Vexillology
Wanker
Logician
Numismatist
Zoophile
Hematologist
Beanbag
Neologism
Snood
hirsute - I need to meet more hairy people so I can use this more often
defenestrate - just as much fun to say as it is to do!
Mitsubishi
Wharf.
I’ve always had a fondness for saying fallopian and panties. 
Globule
Ducky, as in “just ducky”
Rectory.
Don’t know why… just cracks me up.
Also, rectum. Rectum?! Damn near killed 'em!
Ish Kabibble
“Gazornenplatz”
underpants
gazpacho
potentate
jambalaya
smoot
Scuba
Scuba-dooba
Pants
Waka waka waka
Mew mew
Gazpacho
Antipasto
Boobies
Asshat. Sockpuppet. Fucknugget. Dork. Pterodactyl (especially if you pop the ‘p’). Ratzinger. Spong. Meow. Prestidigitator. Kludge. Carbuncle. Thwak. Tendentious. Pendarvis. Weems. Tirebiter. Gewürztraminer. Fabrikoid (a kind of leatherette). Twang. Blastocyst. Beef. Pork. Frijoles. Rapprochement. Dinghy. O’Halloran. Musburger. Cheech. Chong.
Farvagnugan (sorry about the spelling)
Hobbes: “I’m wearing a smock. Actually, I like saying ‘smock.’ Smock, smock, smock, smock…”
Calvin: “What on earth is wrong with you???”
Moot. Gratuitous. Parsimonious. Eldritch. Paradiddle. Chrysanthemum.
I’m very fond of both Fiji and Fuji.