A brand of soccer shorts, most popular during the late 80s/early 90s. Recently, Umbros have seen a revival among men who frequent strip clubs.
The silky smooth fabric of my Umbros reduces friction whenever I visit Chances Are.
by Derf, Inc. September 15, 2008
The act of dry humping your partner until climax, typically while wearing soft clothing such as Umbro shorts.
We didn't want to go all the way, so she let me umbro her on the second date.
by Danimalx87 January 15, 2009