When a heavy smoker deep throats a penis, and afterwards the penis is covered in black tar, mimicking the act of cleaning a chimney.

The act of achieving Level 10 in Evolves FFA Choice before anyone else(A UMS game variant for Starcraft), and using the Ultralisks to "sweep" through the much weaker ground units that your opponents have. Also known as ultra sweeping, sweeping, sweep, etc. Popularly used by TeHNeWBON.

the act of double-fisting.

note - this term implies that each hand is in a separate place (otherwise it would be Sooty & Sootying (or, arguably, Sweep & Sweeping), which sounds gash).

this phrase takes its name from the act of inserting both hands into 80s tv stars, glove-puppets Sooty (the annoying yellow one) & Sweep (the awesome squeaky one).

author's note - i would personally usually start with Sooty on the left & Sweep on the right, but this is down to personal preference.

When someone switches 2 or more lanes at once without using a blinker

The act of scouring one's home to make sure the area is completely clear of all marijuana and related paraphernalia. Often necessary when authoritative figures such as parents drop by. One must also perform a weed sweep when those ignorant of the stoner's weed smoking habits come by, such as hardcore Christian girls, and also hardcore Christian guys (though a huge stoner wouldn't be hanging out with one anyway), apartment maintenance, and other non-stoner associates.

The act of using one's finger or fingers to infiltrate and stimulate the external anal sphincter to cause sexual arousal

A guitar technique used for playing fast arpeggios. One note per string is fretted by the left hand, while the right hand sweeps down/up on the strings in one motion. More than one string cannot ring simultaneously or it will become a chord/whatever.

The difficult part of sweep picking lies within getting your left hand to fret the notes in sync with the right hand's sweeping.