Sick day jokes

I rang my boss and said, "I’m really sick. I won’t be coming into work." My boss said, "Davo, you're sick again! Really! Just how sick are you now?" I replied, "Well, I’m in bed with my sister!"

You want to hear a dirty joke?

This guy and this girl were having sex when the guy's boss called to ask why he wasn't at work. The guy responds, "I'm sick." His boss replies, "You don't sound sick." The guy says, "I'm fucking my sister" and hangs up the phone.

Where do bunnies go when they're sick?

The hoppital.

I called my boss the other Monday and told him I needed the day off because I was sick. He said, "How sick?"

I said, "Well, I'm in bed with my 12-year-old sister."