Question about a strip club advertisement.?

I seen a commercial advertising a local strip club and I looked under their "specials" and it says "receive 1 deep throat for extra energy with every caberet". Does anyone know what this means? I'm pretty sure it's not referring to the sexual act because that'd technically be prostitution, right? Anyways, here's the website for you to see yourself. http://www.lookersclub.com/lookers_007.htm