Concepts that don't have *universal signs are generally finger-spelled, or if context allows utilizing classifiers, such as showing the shape of the object and explaining or showing its use. In this case, words like Skateboard (though there are signs for skateboard they are not universal), Wakeboard, and Surfboard should be fingerspelled, unless you know the regional variant.
*Note: I use the term universal, very very loosely here to refer to the predominant conceptual signs used in ASL, rather than home signs or regional variations.
In American Sign Language, you can sign "WHEN YOU BORN?" to ask someone when they were born.
To sign "Are you happy?" in American Sign Language, you would sign: YOU HAPPY? with raised eyebrows.
In American Sign Language (ASL), you can sign "I know" by pointing to your head with your index finger.
To sign "salmon" in American Sign Language, you would fingerspell the letters S-A-L-M-O-N.
To sign "gray" in American Sign Language (ASL), you would fingerspell the letters G-R-A-Y.
To say "bible" in American Sign Language you would sign "Jesus" then "book."
You make an I in sign language and then point to your head and then nod.
In American Sign Language (ASL), you can sign "emo" by fingerspelling the letters E-M-O.
To sign "Are you mad at me?" in American Sign Language, you would sign: "YOU MAD ME?" while raising your eyebrows and looking concerned.
You would say this with the sign for "you" and the sign for "silly."
Elaine Costello has written: 'Random House Webster's American Sign Language dictionary' -- subject(s): American Sign Language, Dictionaries 'Random House Webster's American Sign Language Legal Dictionary' 'Say it by signing' -- subject(s): Deaf, Education, English language, Sign language, Study and teaching 'Grandmothers Say It Best' 'Random House Webster's American Sign Language Computer Dictionary' 'Infinitives and gerunds' 'Verbs, past, present, and future (Structured tasks for English practice)' 'Religious signing' -- subject(s): American Sign Language, Christianity, Church work with the deaf, Dictionaries, Judaism, Sign language, Terminology, American sign language 'Random House Webster's pocket American sign language dictionary' -- subject(s): American Sign Language, Dictionaries
To sign "grace" in American Sign Language, use the sign by moving your dominant hand, palm down, from your forehead to your chest in a fluid motion.