[show off] {v. phr.}
1. To put out nicely for people to see; display; exhibit.
* /The Science Fair gave Julia a chance to show off her shell collection./* /The girls couldn't wait to show off their fine needlework to our visitors./
2. {informal} To try to attract attention; also, try to attract attention to.
* /The children always show off when we have company./* /Joe hasn't missed a chance to show off his muscles since that pretty girl moved in next door./