I like how delicate and soft Double D is when trying to imitate Eddy's "you have something on your shirt" prank. I don't know, I just love the concern with keeping the characters acting as they would. It's the same prank, but done in different ways.
While Eddy is all intense and rough acting out of enthusiasm, haste and mischief, Double D is cautious and concerned about not causing any harm and just play a silly innocent prank to cheer up his (boy)friend (and also because he has a generally gentle nature, so being rough doesn't come naturally for him), going slowly and gently. Eddy almost rips out Double D's nose while Eddy's nose only gives a little shake.
I love this contrast being so visible when we compare both scenes. And the sound effects are perfect as always.
I also like to point out that Double D's honesty is also highlighted in this scene. It wasn't just a prank to make a fool of Eddy. Double D played the prank honestly because Eddy actually had something on his shirt (his tears). I find it very interesting how Double D is always trying to do things honestly and how even in this scene this trait is in evidence. It's little details like this that I love that are so thought out.