re: American Dad

I watch Family Guy more often, but am starting to watch and like American Dad more.

I saw an episode a week or two ago (a rerun, not sure from what season) that had one of the funniest things I had seen in either show:

The son is going to run away and is climbing down a ladder out his bedroom window. He stops and goes back up because he forgot something. He has remembered that he is going to take condoms with him, then he says to himself something along the lines of, "Can't be too careful on the road. I just pray to God I have enough time to put them on my attackers first."

Anyone know the episode and from what season I am talking about?