TODAY'S JOKE

Akpos and Angella meet in an elevator.
 "Where are you heading today?" Akpos asks.
"I'm going down to give blood."
"How much do you get paid for giving blood?"
"About $20."
"Wow," says Akpos, "I'm going up to donate sperm, and the sperm bank pays $100."
 Angella angrily gets off the elevator.
The next day, Akpos and Angella meet in the elevator again.Akpos said,
"Fancy meeting you again. Where you off to today?"
"Sperm bank," Angella replied with her mouth full.

The question now is, what is Angella's mouth filled with?