There's a decent chance that these voice files might play a part in it.
Voices\English(US)\VOCT_Torgue_Vend_Machine_Idle_0 1.wav=EXPLOOOOOSIONS! TORGUE!
Voices\English(US)\VOCT_Torgue_Vend_Machine_Idle_0 2.wav=BUY TORGUE OR YOU'RE STUPID!
Voices\English(US)\VOCT_Torgue_Vend_Machine_Idle_0 3.wav=TORGUE GUNS MAKE THINGS EXPLODE! END OF SALES PITCH!
Voices\English(US)\VOCT_Torgue_Vend_Machine_Idle_0 4.wav=Is something NOT exploding? Torgue guns will fix that!
Voices\English(US)\VOCT_Torgue_Vend_Machine_Idle_0 5.wav=Every single shot fired from a torgue gun has the chance to explode. What the F*CK else do you need to know?!
Voices\English(US)\VOCT_Torgue_Vend_Machine_Idle_0 6.wav=TORGUE! Because subtlety is for ASSHOLES!
Voices\English(US)\VOCT_Torgue_Vend_Machine_Idle_0 7.wav=Do not buy torgue guns if you are allergic to AWESOMENESS! Or poly-kryten plating.
Voices\English(US)\VOCT_Torgue_Vend_Machine_Idle_0 8.wav=TORGUE! EXPLOSIONS! EXPLOSIONS! TORGUE!
Voices\English(US)\VOCT_Torgue_Vend_Machine_Idle_0 9.wav=If you don't love explosions, you're a BITCH! TORGUE!
Voices\English(US)\VOCT_Torgue_Vend_Machine_Idle_1 0.wav=Torgue weapons include everything good in the world. Death! Explosions! Quality workmanship! Explosions! A commitment to customer service and the undying FOR ****'S SAKE EXPLOSIOOOOONS!
Voices\English(US)\VOCT_Torgue_Vending_Bye_01.wav= NOW BLOW SOME SH*T UP!
Voices\English(US)\VOCT_Torgue_Vending_Bye_02.wav= MOTHAF*CKIN' SEE YA!
Voices\English(US)\VOCT_Torgue_Vending_Bye_03.wav= TESTOSTERONE!
Voices\English(US)\VOCT_Torgue_Vending_Bye_04.wav= IF YOU DON'T COME BACK I'MA BE PISSED!
Voices\English(US)\VOCT_Torgue_Vending_Bye_05.wav= (explosion noise)
Voices\English(US)\VOCT_Torgue_Vending_Bye_06.wav= EXPLOOOSIOOOOOOOOOOONS!
Voices\English(US)\VOCT_Torgue_Vending_Bye_07.wav= NOW GO PUNCH SOME BAD GUYS IN THE DICK!
Voices\English(US)\VOCT_Torgue_Vending_Bye_08.wav= THANKS FOR BROWSING OUR WARES, YOU BADASS MOTHAF*CKA!
Voices\English(US)\VOCT_Torgue_Vending_Bye_09.wav= TORGUE!
Voices\English(US)\VOCT_Torgue_Vending_Bye_10.wav= TOODLES!
Voices\English(US)\VOCT_Torgue_Vending_Purchase_01 .wav=Aw F*CK YEAH!
Voices\English(US)\VOCT_Torgue_Vending_Purchase_02 .wav=GODDAMN RIGHT!
Voices\English(US)\VOCT_Torgue_Vending_Purchase_03 .wav=(sick guitar riff)
Voices\English(US)\VOCT_Torgue_Vending_Purchase_04 .wav=CONGRATULATIONS! YOU ARE NOT A *****!
Voices\English(US)\VOCT_Torgue_Vending_Purchase_05 .wav=NOW YOU'RE A BADASS!
Voices\English(US)\VOCT_Torgue_Vending_Purchase_06 .wav=THINGS ARE GONNA EXPLOOOOOODE!
Voices\English(US)\VOCT_Torgue_Vending_Purchase_07 .wav=THAT'S WHAT I LIKE TO SEE!
Voices\English(US)\VOCT_Torgue_Vending_Purchase_08 .wav=THAT IS THE SMARTEST PURCHASE YOU HAVE EVER GODDAMN MADE!
Voices\English(US)\VOCT_Torgue_Vending_Purchase_09 .wav=KEEP BUYIN, MOTHAF*CKA!
Voices\English(US)\VOCT_Torgue_Vending_Purchase_10 .wav=YOU HAVE MADE ME PROUD!
BUT... who knows?