The Contender help.what did a convenience store clerk say a customer would have to do

In a commercial during this show, what did a convenience store clerk say a customer would have to do in order for him to retrieve a soft drink from the backroom that another customer joined in doing before suggesting an alternative soft drink

Bark like dog
Dance for it
Tell a joke
Beg on knees

Thanks

*Dance for it
*Sierra Mist
*Sierra Free

Thanks again