The uniquely male sensation of having one's scrotum squished into an uncomfortably small area or configuration due to unfortunate seating arrangements. The most common culprit is that poorly-placed knot in your blue jeans where all four denim panels get sewn together at Scro Central.
Causes include sitting quickly and carelessly in hot, humid weather when the twins are just a-danglin', shifting in car seats while seat-belted, any form of self-induced frontal wedgie (often from scooting forward on a cloth-upholstered seat), or a combination of the above.
In particularly blessed gents, sack bunch can result in sitting on one's own balls. Honorable and impressive as the feat sounds, the sensation makes one want to cry and puke simultaneously. Not recommended.
Lady Passenger: Why are you grabbing at yourself? Shouldn't you be concentrating on driving?
Male Driver: Gaah! I got sack bunch! If you just planted your ass on your own man-marbles, you'd be skittish too!
12π 4π
Sports-related: to knock a team out of playoff contention. Derived from the tendency for sports teams to grow their beards during the playoffs as a sign of team unity.
The Chargers bought the Titans their razor(buy their razor) last night by pounding them 42-17 in Tennessee, knocking the Titans to 7-8 and completely out of the playoff chase.
Tattoo on the small of a woman's back, usually roundish with rays or flames and two colors (green and/or red will be invovled most often), located precisely where a guy should set his beer while nailing her doggie style. Most prevalent with porn stars, wannabe porn stars, biker chicks, drrrty grrrls, and suburban fluff chicks who want everybody to think they're hard.
Gents - Are you horny? Then hit the club and scout for chicks with the Bar Slut Hat Trick - crop top, low-rider pants or skirt, and beer coaster tatt on display. (Tight jeans with high heels also a good indicator.)
25π 11π
Adjective to describe that comfortable satisfaction one gets from stuffing their head-holes with fat-and-sugar laden holiday food for a month. Also describes one's new larger physical profile from same.
Guy 1: Man, I've been chowing on pie and Christmas cookies non-stop for the last three weeks. I feel Santastic!
Guy 2: Yeah, you look Santastic, too, Tubbo!
Guy 1: Suck it.
1π 5π
The set of 15 or so songs that Clear Channelesque cookie-cutter format radio stations play at least once an hour 24/7 until their Major Record Label BitchMasters tell them (or pay them) to play something else.
If a song you like makes heavy rotation, you'll hate it in two weeks or less. If a song you hate makes heavy rotation, you'll want to pull your brain out through your ears. Changing the station won't help, since every format radio station across the continent plays the same friggin' 15 songs in heavy rotation.
The MILF anthem "Stacy's Mom" was a fun song until it made heavy rotation - now I don't even want to bang Rachel Hunter anymore.
81π 18π
Combination of the terms NBN and MILF which describes a mythical realm dripping with perpetually horny drop-dead gorgeous women between the ages of 35-50. Some upper-middle-class planned suburban communities bursting at the seams with trophy wives may qualify, but most of us will only see them on TV or in the movies.
Fairview from Desperate Housewives may be the mythical Land of Nibbenmilf.
4π 6π
A metabolic condition which causes ladies to carry extra weight in the gluteus maximii, thus causing Baby to have Back.
Sirmixalotropia is the condition which elicits a springing response when a girl walks in with a itty-bitty waist and a round thing in your face.