This is the video of Eat Bulaga's portion where Joey de Leon used Pokwang's name in a song.
The song's lyrics:
Imagine there's no Seven, wala nang network war
Wala na ang Kapuso, remake ng Marimar
Imagine walang Bubble Gang every Friday
Imagine Mike Enriquez, walang excuse me po
No Dyesebel to watch for and no more Gobingo
Imagine no more Idol, no Saksi at Sis
At wala nang Dramarama
Channel 2's the only one
Makikita araw-araw ay mukha lang ni Pokwang
Makikita araw-araw ay mukha lang ng aswang
Imagine the situation, I wonder if you can
We need some girls like Marian, not girls who look like men.
If you would analyze the song, Joey de Leon didn't directly call Pokwang an aswang. He just used Pokwang's name in a sentence then repeated that sentence and replaced Pokwang's name with the word aswang. But then again, you be the judge =)