An adult who still gets money from their parents. Being under your parents car insurance or cell phone plan when you're over the age of 22. A person who continues to get rent money, grocery money, etc from their parents even after they've graduated college. This person makes poor decisions with money because they know they have their parents to bail them out. This person will continually deny sucking their parents tit because it is embarrassing to admit they can't lead an adult life. Parents who have a titty baby will likely never be able to retire as they will continue to support said titty baby well into their retirement years. By the time the parents die, there is no milk left and therefore no inheritance for the other children.
Billy: How does Brent afford to drive that Benz on his 15 hour/week job?
Marty: His parent's bought that for him when he turned 24 and they pay his rent and cell phone bill.
Todd: That titty baby is still breast feeding at 27.
Marty: His parent's had to sell their retirement house because of that lazy son-of-a-bitch.
by John Lockesmith June 17, 2010
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A grown ass man who’s babied by his mother.
Wait so he’s 45 still living with his mom?

Yea he’s a titty baby.
by Janztek June 26, 2021
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A grown ass man who’s babied by his mother.
Wait so he’s 45 still living off his mom?

Yea hes a titty baby.
by Janztek June 26, 2021
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A guy with boobs. Not man boobs of fat but real boobs that he acquired from taking testosterone pills he got online. A hormone inbalance caused by the pills causes estrogen levels to rise and causes him to grow real boobs for which there is a scientific name. It also causes him to be more emotional than the average guy and more insecure than the average guy. If only his mom would pay for the surgery to get mammary tissue removed.
"I tried to look past his gynecomastia, but I just couldn't get past how clingy he was being. He was a real titty baby."
by truth2014 September 8, 2014
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