Melissa McCarthy plays a suspicious neighbor in 'SNL' Christmas sketch

Melissa McCarthy plays a suspicious neighbor in 'SNL' Christmas sketch

The spirit of Christmas has taken over 30 Rock, and this week's Saturday Night Live host, Melissa McCarthy, joined in with a sketch about spreading joy through acts of kindness. Well, kind of. Following her young neighbor's heartwarming decision to shovel her snowy path, McCarthy — the elderly, seemingly innocuous grandma next door — decided to return the favor, with a series of gifts that escalate in terrifying, hilarious ways. SEE ALSO: What…