tight as a tick adjective3 •Fully inflated; swollen near to bursting.I blow it up until it's tight as a tick. Just below the skirt through which the lanyard passes, a tiny mouth whistles a single-note tune until the balloon's lungs are emptied. — 2002 •(slang) Drunk, inebriated.For there ain't no kick Getting tight as a tick When you know that you're not breaking the law — 1933 •(slang) Unwilling to spend money.The last time she had visited, Sean's father, Tiny Tim, who was tight as a tick with his money, jovially presided over the place, one big yard filled with rusting cars. — 2003