Sorry for bumping a 6 month old thread but I saw this hillarious aggressive tip request in a movie once.
Anyone seen the Beavis and Butthead movie? In any case the two boys get escorted by the Porter to their room, they immediately run to the tv remote and the porter is standing in the doorway and suddenly clears his throat and holds his hand out. It went something like this.
Beavis: "Hey Butthead that guy is still standing there."
Butthead (Calls out to the Porter): "Ummm, can you like, not stand there. huh huh huh"
The porter just walks off all disappointed. LMAO