The seam of skin between the bullet hole and ball bag or vagina (minge, gash, clunge etc)
I'm gonna kick you in the weld
by Weld Licker September 5, 2013
(Jamaica, old school) To engage in sexual intercourse.
I'm goin' to be weldin' her big time tonight, mon.
by bigword February 1, 2008
The stripe that is on the underside of the penis where it looks like the skin has been joined together.

If you check your own penis you will see it - and as it has no official medical term, and has appearance the of a seam weld, this is commonly referred to as 'The Weld'.
Look at ' (The) weld' on that cock
by Les of Lesbania November 13, 2010
The space between a mans anus and nut sack. It is where a man is said to be welded together.
You can lick my weld if you like...actually just lick it anyway.
by Sub-Prime August 5, 2005
At raft camp, Josh and Lola were totally welding, you could see the sparks.
by yolivia June 3, 2013
grinding your penis in between the thighs of another man to achieve ejaculation.
In the mid-90s, young men at the Indian Institute of Technology (IIT-Madras) started the concept of welding as they were having difficulty getting anywhere with young females.

Sanju: Man, I asked the hot chick out to chai, but she rejected me.

Krishnu: It's okay. We can head back to our dormitories and weld Sanju.
by G-Bond April 25, 2010