From Wikipedia, the free encyclopedia. American Sign Language (ASL), the sign language used by the deaf community throughout most of North America, has a rich vocabulary of terms which include profanity.Within deaf culture, there is a distinction drawn between signs used to curse versus signs that are used to describe sexual acts. This sign is not considered part of ASL. 2  It is however part of New Zealand Sign Language. 3  The correct sign in ASL is performed with both the pointer and pinkie finger being extended and thrusting the hand forward to signify bullshit.