Jim Cramer commented on several mergers while answering viewers' social media questions from the floor of the New York Stock Exchange on Monday.

Cramer, who's portfolio manager of TheStreet'sAction Alerts Plus and host of CNBC's 'Mad Money,' was asked when Pfizer (PFE) - Get Report and Allergan (AGN) - Get Report will complete their merger. Cramer believes the two companies won't unite until the third quarter of next year because it's a complex merger, but he added he's not worried about the tax inversion issue. Action Alerts Plus owns Allergan.

Cramer also talked about JAB Holding's purchase of Keurig Green Mountain (GMCR) for $13.9 billion, saying it's a great deal for Green Mountain. Coca-Cola (KO) - Get Report , which is Keurig's biggest single shareholder, has said it supports the deal.

On the recent news that Amazon (AMZN) - Get Report is teaming up with Baidu (BIDU) - Get Report on the content side, Cramer said investors should continue to buy Amazon.

Cramer commented on a few retailers, saying Rite Aid (RAD) - Get Report is a stock to hold onto, and that when Macy's (M) - Get Report stock falls to $35, it might be time to pull the trigger.

Regarding food companies, Cramer said Hormel (HRL) - Get Report is probably the best acting stock that he follows, and to buy on any pullback. But he's not a fan of Dunkin' Brands (DNKN) - Get Report saying its same-store sales are inconsistent. Instead, Action Alerts Plus owns Starbucks (SBUX) - Get Report .

Cramer also thinks Energy Transfer Partners (ETP) is a buy and that the charitable trust is buying it very slowly on the way down. He pointed out the trust sold a gigantic chunk at $42-$43, and has since bought back a quarter of the position. Cramer said he'd probably buy back another quarter if the stock goes down another 10%.

A viewer asked about Kinder Morgan (KMI) - Get Report  and Cramer said he would defer to the Real Money columnists who are presenting different views on the stock. Cramer was also asked about Exelon (EXC) - Get Report and he responded that he wants nothing to do with utility stocks, which keep going lower ahead of the expected Federal Reserve interest rate hike.

Cramer discussed cruise line stocks, saying Norwegian Cruise Lines (NCLH) - Get Report is a terrific stock, but he likes Royal Caribbean (RCL) - Get Report best.

Finally, Cramer was asked to play Santa Claus and pick out the best stock gift for a seven-year old, from either Disney (DIS) - Get Report or Ford (F) - Get Report . Cramer said he really wants Disney, even though Ford recently reported strong sales in China. Cramer said buying Disney is a bet on company's management.

Cramer answers viewer questions in a daily segment with TheStreetTV. He's on Facebook (FB) - Get Report . On Twitter (TWTR) - Get Report he's @jimcramer; use hashtag CramerQ.