Guy who bangs your girlfriend.
Dude, I saw your girlfriend with a Gallagher last night
1. extremely nice guy; sensitive
2. horndog; eager for sexual intercourse
3. amazing in bed; hot
4. extremely hilarious; will make anyone laugh
That really nice horndog is a gallagher.
After ejaculating on a girls buttocks, the man takes his penis, and much like a hammer to a watermelon, uses the head of his penis to splatter his own pool of semen all over her.
Getting inspiration from the prop comic, Ted decided to give his girlfriend a gallagher, unknowingly hitting her cat who was in the splash zone.
Noun: A very large penis.
Man have you seen Tim's Gallagher.
Very large eyebrows, like Peter Gallagher.
Man! Look at the Gallaghers on that dude!
Gallagher; verb ; When your girlfriend is giving you head, suddenly grab the back of her skull and jam your dick down her throat.. This is usually used when she has been being a bitch or just needs to be put in her place.
My girlfriend was complaining how our relationship is all about me, so while she was blowing me, i gallaghered the bitch.
(n.) a person or thing that acts in a manner such as imposing odd characteristics. Not normal.
"gallagher" a person saying odd comments like gub gub incessantly