A likeaholic is someone on facebook who likes everything they see. Instead of writing a more meaningful comment, they press the 'like' button. This becomes an addictive quality in the person and they are known widely across the internet for it.
"Look at these pictures from Jane's prom! I am going to like them all"
"You're such a likaholic"
or
"Hey did you read my facebook status?"
"Yeah, I always 'like' them"
"Ugh, likeaholics"
A liqaholic is someone who can drink a insane amount of hard liquor (hense the liq in liqaholic) A liqaholic has a liver that could digest straight nails from its years of indulging in 151 and hand sanatizer. This is the type of person you wouldn't want to go shot for shot with because utter defeat is as guaranteed as is your alcohol poisoning.