Tig Welded is generally used as an insult to describe something being stuck to something or addicted.
If you're playing a game and someone is cheating you can say they're "tig welded" to their chair.
This would insinuate that the user has bad hygiene and never leaves his chair.
This kid is tig welded to his chair, he is hacking on roblox.
My friend is tig welded to Tetris because I swear thats all he plays.
tig bitties
When your walking in a public place with your friends and you see a TIG with nice full bodacious breasts. You wanna say something to your friends without alerting the big boobed TIG, so you say "Damnnn looked at them tig bitties"