When a girl is going down on her man, and he's about to burst in that skanks mouth, then all of a sudden he squeals. It just so happens that the womans mouth gets sore so she closes her mouth, bites the head. This pressure on his dick makes him squeal in pain.
"Last night my bitch was giving me some head, when all of a sudden i screamed like a little girl. The bitch made me pull a squealing moby dick."