The magna doodle says: "another one bites the dust."
The bachelor party decorations in Joey and Chandler's apartment include inflated condoms. You can see them behind Ross in the scene when Joey first tells him about the ring.
The magna doodle during the best man argument says, "Big chief ain't got no fire water".
Phoebe being a vegetarian wouldn't wear leather pants having been made from cows. We know this based on her telling Chandler and Joey in a previous episode "I can't believe cows had to make the ultimate sacrifice for your 2 chairs."
The fake name that Chandler uses to get the stripper to come to his office is Gunther Centralperk, a lukewarm tribute to the quirky waiter at the gang's favorite hangout. It's actually a joke because Gunther (from Central Perk) asked the guys, "Do you even know my last name?" to which Chandler responded "Gunther Centralperk?"