You guys have dirty minds. You can see the T-rex's legs (i think it's a t-rex) is not actually behind the stegasaurus. So I fail to see the funny, at first it's like...surprize butsecks...but no, we are just corrupted.
Lol, I get that ad too, along with a few others of the same type... "Hey there Christian men trying to stay chaste! Here are some sexy girls to lust over!" "Right on!"