I.C. !
Frost bite !
What does snowman say to the other snowman? - It smells of carrots!
None, they prefer to live in the dark.
Because 8 out of 10 cats prefer whiskas !
Because they often spend years at C EDIT: made it more punny
Because the rest of the letters are not-E.
Eleven. T-H-E A-L-P-H-A-B-E-T.
Black mail !