Yes, he can — hook up with young hotties! “Saturday Night Live” comic Fred Armisen — best known for his impersonation of President Obama — is reportedly dating his “SNL” co-star Abby Elliott, just weeks after separating from “Mad Men” beauty Elisabeth Moss, his wife of only 10 months. Armisen, 43, has found “solace” in the arms of Elliott, who is 20 years his junior. The actor apparently likes them young — his estranged wife is just 28. “Fred and Abby are getting to know each other in a romantic way and taking things slowly,” a source told Life & Style. Repeated calls and messages to their reps went unreturned. Armisen and Elliott, the daughter of “SNL” alum Chris Elliott, were spotted recently eating dinner together at Reservoir in LA.